Yearly Archives: 2024

　　Anti-loosening nut is a nut, which is a part that is screwed together with a bolt or a screw for tightening. It is an original part required by all production and processing equipment. Anti-loosening non standard nut is a part that tightly connects mechanical equipment together. With the help of the inner thread, anti-loosening nuts and screws of the same specifications can be connected together. The following is a detailed introduction to several methods of preventing anti-loosening nuts from slipping.After that, non standard fasteners Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://jieruifasteners.com/

　　1. Anti-loosening of equipment

　　It is to use the locking nut stopper to directly limit the relative rotation of the locking nut pair. For example, the use of tooth pins, serial wires and stop washers. Because the locking nut stopper does not have a pre-tightening force, the anti-loosening stopper can only work when the locking nut is loose and returned to the stop position. Therefore, the locking nut method does not actually prevent loosening but prevents falling.

　　2. Riveting and anti-loosening

　　After tightening, use punching, welding, bonding and other methods to make the locking nut pair lose the performance of the kinematic pair and the connection becomes an irremovable connection. The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, and the bolt pair needs to be damaged before it can be disassembled.

　　3. Friction anti-loosening

　　It is the most widely used anti-loosening method. This method forms a positive pressure between the locking nut pairs that does not change with the external force, so as to form a friction force that can prevent the relative rotation of the locking nut pairs. This positive pressure can be achieved by axially or simultaneously pressing the locking nut pairs in two directions. For example, elastic washers, double nuts, self-locking nuts and insert locking nuts are used.

　　4. Structural anti-loosening

　　It is to apply the locking nut pair’s own structure, that is, the Tang’s locking nut anti-loosening method.

　　5. Punching edge anti-loosening

　　After the nut is tightened, the thread is destroyed by punching the end of the thread; bonding anti-loosening generally uses anaerobic adhesive to apply to the thread screw surface. After tightening the anti-loosening nut, the adhesive can solidify by itself, and the actual anti-loosening effect is better. The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, and the bolt pair needs to be destroyed before it can be disassembled.

　　Geothermal heat pumps, also known as ground source heat pumps, are an efficient and sustainable solution for heating and cooling homes. They utilize the stable temperatures found underground to provide consistent and eco-friendly climate control. Let’s dive into how these systems work and why they are an excellent choice for both heating and air conditioning needs.After screening and investigation Inverter heat pump It is likely to become a new force driving economic development. http://mangoenergyheatpump.com

　　What is a Geothermal Heat Pump?

　　A geothermal heat pump is a system that leverages the earth’s natural heat to provide heating, cooling, and often hot water for residential and commercial buildings. Unlike conventional HVAC systems that rely on outside air temperatures, geothermal systems use the relatively constant temperature of the ground as a heat source in winter and a heat sink in summer.

　　How Do Geothermal Heat Pumps Work?

　　1. Ground Loop System:

　　Closed-Loop Systems: These are the most common and involve a loop of piping buried in the ground or submerged in water. The loops can be installed horizontally, vertically, or in a pond/lake.

　　Open-Loop Systems: These systems use groundwater from a well or surface body, which is returned to the source after heat exchange.

　　2. Heat Exchange Process:

　　Heating Mode: During winter, the fluid in the ground loop absorbs heat from the earth. This heat is then transferred to the heat pump unit inside the building. The heat pump compresses the absorbed heat to a higher temperature and distributes it through the building’s ductwork or radiant heating system.

　　Cooling Mode: In the summer, the process is reversed. The heat pump extracts heat from the indoor air and transfers it to the cooler ground via the ground loop. This removes heat from the home and effectively cools it down.

　　3. Distribution System:

　　Once the heat is extracted from the ground and conditioned by the heat pump, it is distributed throughout the home via traditional ductwork or a radiant floor system.

　　Benefits of Geothermal Heat Pumps

　　1. Energy Efficiency:

　　Geothermal heat pumps are significantly more efficient than traditional heating and cooling systems. They can achieve efficiencies of 300-600%, meaning they can produce 3 to 6 units of heating or cooling for every unit of electricity consumed.

　　2. Environmental Impact:

　　By using renewable energy from the earth, geothermal systems reduce reliance on fossil fuels and decrease greenhouse gas emissions. They are a greener choice for sustainable living.

　　3. Cost Savings:

　　Although the initial installation cost of a geothermal heat pump can be higher, the system pays for itself over time through lower operating costs. Homeowners can save up to 70% on heating, cooling, and hot water bills.

　　4. Longevity and Durability:

　　Geothermal systems have fewer moving parts and are sheltered from outdoor elements, leading to longer lifespans. The underground loop systems often come with warranties of 50 years or more.

　　In the world of kitchen accessories, silicone dish drying mats have gained popularity due to their durability, flexibility, and ease of maintenance. For businesses looking to stock these in-demand products, purchasing silicone dish drying mats wholesale is a smart move. This guide will delve into the benefits, uses, and tips for purchasing silicone dish drying mats in bulk.If we can practice these points, customized silicone mould Will be unique, become a leader in the industry, and keep moving forward. https://lxsiliconeparts.com/

　　Why Choose Silicone Dish Drying Mats?

　　1. Durability and Longevity

　　Silicone dish drying mats are known for their long-lasting nature. Unlike traditional dish drying racks, silicone mats do not rust, crack, or degrade over time. This makes them a cost-effective choice for both consumers and retailers.

　　2. Heat Resistance

　　Silicone is highly heat resistant, making these mats versatile kitchen tools. They can be used as trivets to protect countertops from hot pots and pans, adding extra value for consumers.

　　3. Easy Maintenance

　　One of the standout features of silicone dish drying mats is their ease of cleaning. They are typically dishwasher safe, and their non-porous surface resists mold and mildew, ensuring a hygienic drying area for dishes.

　　silicone dish drying mats wholesale

　　Practical Uses of Silicone Dish Drying Mats

　　1. Dish Drying

　　The primary use of these mats is, of course, for drying dishes. Their ribbed or textured surface allows for efficient drainage, keeping dishes elevated and promoting quick drying.

　　2. Countertop Protection

　　Beyond drying dishes, these mats can be used to protect countertops from spills, scratches, and heat damage. They are ideal for placing under kitchen appliances or as a workspace for food preparation.

　　3. Multipurpose Kitchen Tool

　　Silicone dish drying mats can double as placemats, pet feeding mats, or even as a base for craft projects. Their versatility makes them an attractive option for consumers seeking multipurpose kitchen accessories.

　　Benefits of Purchasing Silicone Dish Drying Mats Wholesale

　　1. Cost Savings

　　Buying in bulk significantly reduces the per-unit cost, allowing retailers to maximize their profit margins. This is especially beneficial for businesses looking to offer competitive pricing.

　　2. Consistent Supply

　　Wholesale purchasing ensures a steady supply of products, helping retailers maintain inventory levels and meet customer demand without frequent reordering.

　　3. Customization Options

　　Many wholesale suppliers offer customization options, such as branding and unique designs. This allows retailers to differentiate their products in the market and cater to specific customer preferences.

　　Finding a reliable biodegradable milk tea bag involves considering several factors to ensure the product meets your quality, sustainability, and usability requirements. Here¨s a guide to help you find the best options.Gold and silver are not as good as clear waters and green mountains. This is an environmental protection slogan put forward in recent years. When you order milk tea at home or in the office, you will get a packaging bag. A small packaging bag may not have any impact on the environment, but when people gather together, so many people order milk tea every day. Over time, the pollution caused by this plastic milk tea bag to the environment is still very serious, because ordinary Plastic can exist in nature for hundreds of years. If it is burned, it will also produce dioxins and other pollutants, causing serious damage to the environment.understand biodegradable mailing bags In order to better serve customers and reflect the core competitiveness of products. https://biodegradable-gd.com

　　For the sake of environmental protection, the country has strictly restricted the production and sale of disposable plastic products such as plastic shopping bags since January 1, 2021, referred to as the “Plastic Ban”. As a result, supermarkets, restaurants, milk tea shops and other places have replaced plastic shopping bags with biodegradable bags to meet environmental protection requirements.

　　Among the solutions to replace plastic products, biodegradable materials have attracted everyone’s attention. Because the raw material of biodegradable milk tea bags, polylactic acid PLA, comes from plants such as corn and potatoes, and the source of raw materials is very environmentally friendly and natural. After use, biodegradable milk tea bags can be degraded into carbon dioxide, water and other substances in the landfill in about 180 days. They will not become “white garbage” like plastic bags and pollute the environment. With the implementation of the plastic ban, many milk tea shops have assumed the responsibility of environmental protection and have replaced plastic bags with compostable milk tea bags.

　　Therefore, when purchasing biodegradable products, you must carefully identify them. Here are some simple identification tips:

　　1. Choose products from large manufacturers, which are more reliable and reduce the risk of buying by mistake.

　　2. Read the ingredient description. When purchasing biodegradable milk tea bags, we can ask the manufacturer about the ingredients of the bags, which are generally polylactic acid (PLA), polyadipate (PBAT), and starch. Others such as PE+starch are pseudo-degradable. Relevant documents stipulate that degradable materials cannot contain plastic components such as PE, PP, PVC, and PET. Products such as PE+starch and PE+photooxidant are pseudo-degradable and need attention.

　　To find a reliable compostable milk tea bag, focus on verifying the materials, assessing environmental impact, evaluating quality, and considering brand reputation. By doing thorough research and possibly testing samples, you can ensure you choose a product that meets your needs while contributing to environmental sustainability.We are both victims and beneficiaries of environmental protection. For environmental protection, we can start with small things around us, starting with using one less plastic shopping bag and one less plastic straw.

　　In the fastener forming process, cold heading (extrusion) technology is a main processing technology, which belongs to the category of metal pressure processing. In production, at room temperature, external force is applied to the metal to form the metal in a predetermined mold. This method is usually called cold heading. In fact, the forming of any fastener is not only achieved by cold heading. In the cold heading process, in addition to upsetting deformation, it is also accompanied by positive and negative extrusion, compound extrusion, punching, rolling and other deformation methods. Therefore, the name of cold heading in production is just a habitual name. To be more precise, it should be called cold heading (extrusion).On the other hand, non standard fasteners It also brings tangible benefits to everyone and feels useful. It is a model of the industry. https://jieruifasteners.com/

　　Cold heading (extrusion) has many advantages, and it is suitable for mass production of fasteners. Its advantages can be summarized as follows:

　　High steel utilization rate. Cold heading (extrusion) is a method with little or no cutting. For example, when machining hexagonal bolts and cylindrical hexagon socket screws of rod type, the steel utilization rate is only 25% to 35% by cutting method, while by cold heading (extrusion), its utilization rate can be as high as 85% to 95%, which is only some process consumption of material head, material tail and cutting hexagonal head edge.

　　High productivity. Compared with general cutting processing, the efficiency of cold heading (extrusion) is more than dozens of times higher.

　　Good mechanical properties. The strength of parts processed by cold heading (extrusion) method is much better than that of cutting processing because the metal fiber is not cut off.Suitable for automated production. Fasteners (including some special-shaped parts) suitable for cold heading (extrusion) method are basically symmetrical parts, suitable for production by high-speed automatic cold heading machine, and also the main method of mass production.

　　In short, the cold heading (extrusion) method for processing fasteners and special-shaped parts is a processing method with a very high comprehensive economic benefit. It is a processing method commonly used in the fastener industry. It is also an advanced processing method that is widely used and has great development both at home and abroad.

　　Cold heading, cold pressing:

　　At room temperature, the blank is placed in the mold of an automatic cold heading machine or a press, and pressure is applied to the mold. The relative movement of the upper and lower molds is used to deform the blank in the mold cavity, reduce the height, and increase the cross section. This pressure processing method is called cold heading for automatic cold heading machines and cold pressing for presses. In actual production, the cold forming process of fasteners is often accompanied by extrusion during the cold heading process. Therefore, the cold heading process of fastener products is actually a composite processing method that has both cold heading and extrusion.

　　Deformation methods of cold heading (extrusion):

　　1. Punching. Separate part of the blank from the main body, such as cutting of wire, punching of nuts, trimming of the head of hexagonal bolts, etc.

　　2. Upsetting. A processing method that shortens the height of the blank and increases the cross-section, such as ball upsetting of nuts, pre-upsetting and fine upsetting of bolt head forming, etc.

　　3. Positive extrusion. During cold heading, when the blank is deformed in the lower die, the flow direction of the metal is consistent with the movement direction of the upper die. The reduction of the thick rod in cold heading bolts and cylindrical head hexagon socket screws is a positive extrusion.

　　4. Reverse extrusion. During the deformation of the blank, the flow direction of the metal is opposite to the movement direction of the upper die. The head forming of the cylindrical head hexagon socket screw belongs to reverse extrusion.

　　5. Compound extrusion. During the deformation of the blank, part of the metal flow direction is the same as the movement direction of the upper die, and part is opposite to it, that is, there is both positive extrusion and negative extrusion during the deformation. For example, the cylindrical head hexagon socket screw has both rod diameter reduction (positive extrusion) and head forming (negative extrusion) during the deformation at the same station.

　　Creating custom metal parts is a critical process in various industries, from automotive and aerospace to electronics and consumer goods. Whether you need precise components for machinery or unique fixtures for your home, custom metal parts provide the tailored solutions necessary for specific applications. Companies like Jierui custom metal parts and custom service hardware are at the forefront of this field, offering expertise and advanced technology to meet diverse customer needs. This comprehensive guide will take you through the steps of making custom metal parts, highlighting essential aspects and key considerations.Mentioned in the article Non standard hardware factory Born with strong vitality, you can turn a cocoon into a butterfly and become the best yourself after wind and rain. https://jieruifasteners.com/

　　1. Key Considerations for Custom Metal Parts

　　Before diving into the manufacturing process, several factors need careful consideration:

　　Material Selection: The choice of material is crucial, as it affects the part¨s strength, durability, and performance. Common materials include steel, aluminum, brass, copper, and titanium. Each material has its properties, such as corrosion resistance, weight, and thermal conductivity, which should align with the intended use of the part.

　　Design Specifications: Detailed design specifications are essential for ensuring the part meets its intended function. This includes dimensions, tolerances, surface finishes, and any special features or requirements.

　　Manufacturing Method: Depending on the complexity and quantity of the parts, different manufacturing methods can be used, such as CNC machining, laser cutting, stamping, and welding. Each method has its advantages and limitations.

　　Cost and Lead Time: Custom metal parts can vary significantly in cost and production time. Factors influencing these include the complexity of the design, material choice, and manufacturing method. It¨s important to balance these factors to meet budget and deadline constraints.

　　Non standard hardware manufacturers.jpg

　　2. The Custom Metal Part Manufacturing Process

　　Creating custom metal parts involves several steps, from initial design to final production. Here is an overview of the typical process:

　　Design and Prototyping

　　The first step in creating custom metal parts is designing the part. This involves working with CAD (Computer-Aided Design) software to create detailed 3D models. The design should include all necessary specifications, such as dimensions, tolerances, and material type. Once the design is finalized, a prototype may be created using rapid prototyping techniques like 3D printing or small-scale machining to test the design and make any necessary adjustments.

　　Material Selection

　　Choosing the right material is crucial for the performance and longevity of the part. The material must meet the required strength, durability, and other specifications. Custom Service Hardware and Jierui Custom Metal Parts offer a wide range of materials, ensuring that the chosen material aligns with the intended application and environmental conditions.

　　CNC Machining

　　CNC (Computer Numerical Control) machining is a widely used method for creating custom metal parts. This process involves using computer-controlled machines to remove material from a solid block to create the desired shape. CNC machining is known for its precision and ability to produce complex parts with tight tolerances. It is ideal for both prototyping and production of custom parts.

　　Laser Cutting

　　Laser cutting is another popular technique for creating custom metal parts. This method uses a high-powered laser to cut through metal sheets with great precision. Laser cutting is especially useful for creating intricate designs and detailed features. It is also highly efficient, making it suitable for both small and large production runs.

　　Stamping and Forming

　　For parts that require specific shapes or forms, stamping and forming processes can be used. Stamping involves pressing a sheet of metal into a die to create the desired shape, while forming involves bending or shaping the metal. These processes are typically used for creating parts in large quantities due to their efficiency and consistency.

　　Welding and Assembly

　　If the custom metal part consists of multiple components, welding and assembly are necessary. Welding involves joining two or more metal pieces together using heat and pressure. Various welding techniques, such as MIG, TIG, and spot welding, can be used depending on the material and design requirements. Assembly involves putting together all the components to create the final part.

　　Surface Finishing

　　Surface finishing is an important step to enhance the appearance and performance of custom metal parts. This can include processes such as polishing, painting, anodizing, or powder coating. Surface finishing can improve corrosion resistance, wear resistance, and aesthetic appeal. Custom Service Hardware and Jierui Custom Metal Parts offer various finishing options to meet specific customer needs.

　　Quality Control and Testing

　　Ensuring the quality and accuracy of custom metal parts is crucial. This involves rigorous quality control and testing processes to verify that the parts meet all design specifications and performance requirements. Techniques such as coordinate measuring machine (CMM) inspection, hardness testing, and surface finish analysis are commonly used to ensure the highest quality standards.

　　When it comes to manufacturing custom silicone parts, precision and quality are paramount. Longxiang, a leading custom silicone part supplier, excels in delivering high-precision silicone parts tailored to meet diverse industry needs. In this blog post, we’ll explore the importance of custom silicone parts, the benefits of high-precision manufacturing, and why Longxiang stands out as a top supplier.beyond doubt silicone baby teether It will definitely lead the development direction of the whole industry and let its light bloom in this field. https://lxsiliconeparts.com/

　　The Importance of Custom Silicone Parts

　　Custom silicone parts are essential in various industries, including automotive, medical, electronics, and consumer goods. Their versatility, durability, and resilience make them ideal for applications requiring flexibility, heat resistance, and biocompatibility. Customization allows these parts to be tailored to specific requirements, ensuring optimal performance and functionality.

　　custom silicone parts

　　Benefits of High-Precision Silicone Parts

　　Accuracy: High-precision silicone parts ensure that components fit perfectly within their intended applications, reducing the risk of malfunction or failure.

　　Consistency: Precision manufacturing guarantees that each part produced meets the same high standards, ensuring reliability across large production runs.

　　Enhanced Performance: Precise silicone parts offer better performance in demanding environments, such as extreme temperatures or high-stress conditions.

　　Cost Efficiency: While high-precision parts may have higher upfront costs, their durability and reliability can lead to long-term savings by reducing the need for frequent replacements or repairs.

　　Longxiang: Your Trusted Custom Silicone Part Supplier

　　Longxiang has established itself as a premier supplier of custom silicone parts, known for its commitment to quality and precision. Here¨s why Longxiang is the go-to choice for businesses seeking top-notch silicone components:

　　Advanced Manufacturing Capabilities

　　Longxiang utilizes state-of-the-art manufacturing technologies to produce high-precision silicone parts. Their advanced machinery and skilled workforce ensure that each part meets the exact specifications required by clients.

　　Comprehensive Customization

　　Longxiang offers extensive customization options, allowing clients to specify the exact dimensions, shapes, and properties needed for their silicone parts. This flexibility ensures that each component is perfectly suited to its intended application.

　　Strict Quality Control

　　Quality is a cornerstone of Longxiang’s manufacturing process. Rigorous quality control measures are in place at every stage of production to ensure that each silicone part meets the highest standards of precision and performance.

　　Industry Expertise

　　With years of experience in the silicone parts industry, Longxiang has the expertise to handle complex projects and deliver solutions that meet the unique needs of various industries. Their knowledge and experience ensure that clients receive the best possible products and services.

　　Biodegradable vest bags are an innovative type of plastic bag crafted from degradable plastic materials. Unlike traditional plastic bags, biodegradable vest bags offer superior degradation performance and a significantly reduced environmental impact.Traditional plastic bags are typically made from synthetic plastics such as polyethylene (PE) or polypropylene (PP). These materials can take hundreds of years to fully degrade, leading to severe environmental pollution. The persistent nature of these plastics means they accumulate in the environment, causing harm to wildlife and ecosystems.Through bit by bit efforts, let biodegradable dog poop bags Our market share is getting higher and higher, and the return on investment is also rising steadily. https://biodegradable-gd.com

　　1. What Makes Biodegradable Vest Bags Different?

　　Biodegradable vest bags are made from materials such as starch derivatives or polylactic acid (PLA), which can degrade much more rapidly under natural conditions. This swift degradation process helps to lessen the environmental burden significantly. The production process for biodegradable vest bags is similar to that of traditional vest bags, featuring a hollow structure that makes it easy to load shopping items. These bags are versatile and suitable for various uses, including shopping and food packaging.

　　2. Performance and Environmental Benefits

　　Biodegradable vest bags perform similarly to traditional vest bags in terms of durability and functionality. However, their environmental benefits are substantial. After use, these bags can be broken down into water, carbon dioxide, and biomass by microorganisms, water, and oxygen in the natural environment. This degradation process happens relatively quickly and does not pollute the soil or water bodies. Moreover, biodegradable vest bags meet both national and international environmental protection standards, aligning with the principles of sustainable development.

　　3. Production Considerations

　　While biodegradable vest bags offer many environmental advantages, there are some considerations to keep in mind. The production of these bags can result in relatively high carbon emissions due to the significant amount of energy consumed during the manufacturing process. Additionally, biodegradable vest bags require specific environmental conditions to degrade effectively. Without proper treatment and suitable degradation conditions, they can still have a negative impact on the environment.

　　4. Responsible Use and Disposal

　　To maximize the environmental benefits of biodegradable vest bags, it is essential to use and dispose of them responsibly. Proper handling and ensuring they are subjected to appropriate degradation conditions are crucial for minimizing their environmental impact.

　　Conclusion:

　　Biodegradable vest bags represent a significant advancement in the quest for environmentally friendly packaging solutions. They address the critical issue of plastic pollution by offering a more sustainable alternative to traditional plastic bags. However, to fully leverage their environmental benefits, it is important to use these bags responsibly and ensure they are disposed of under suitable conditions. By doing so, biodegradable vest bags can play a pivotal role in reducing the environmental footprint of plastic waste and promoting sustainable practices.

　　Cold heading is a common process for manufacturing the heads of fasteners such as bolts, screws, pins, rivets, etc. In many cases, heading is actually a type of cold heading. Cold heading is a forging method that uses a die to compress and shape metal bars at room temperature.So we can draw a preliminary conclusion, non standard fasteners It is helpful to the needs of the industry market and social development. https://jieruifasteners.com/

　　The specific operation process is to put the metal bar into the cold heading machine and extrude it into shape through pressure. During the extrusion process, the metal bar will undergo plastic deformation, thereby changing its shape and size, and the head of the fastener will be formed.

　　In the field of fastener manufacturing, cold heading process is widely used because of its following characteristics:

　　1. Cold heading process can be carried out at room temperature without heating metal materials.

　　2. Cold heading process can reduce or replace cutting processing and improve material utilization.

　　3. Cold heading machine models and series are complete, suitable for various bolts and nuts forming, equipment performance is reliable, high efficiency, stable quality.

　　4. Cold heading machine can realize continuous, multi-station, automatic production, simple operation, suitable for mass production.

　　The cold heading process can improve the surface finish of the workpiece and ensure the accuracy of the workpiece, and can manufacture high-precision, high-strength bolts, nuts, etc.; the cold heading process can improve the mechanical properties of the workpiece, such as increasing the density and hardness of the material, thereby improving wear resistance and corrosion resistance. In general, the cold heading process can improve productivity, ensure the quality of fasteners, reduce material loss, and reduce production costs. It is increasingly widely used in the production of standard fasteners.

Under people’s attention ddos攻击软件 Finally grow into what people need, born for the market and come for the demand.https://www.ddos444.com/

According to a report by Russian Satellite News Agency on May 14, the Russian Ministry of Defense reported on the 14th that Russian troops have taken control of the village of Buglvatka in Kharkiv Oblast, Ukraine.

The Russian Ministry of Defense said: After positive action, the northern group troops liberated the village of Buglvatka in Kharkiv Region and broke into the enemy’s deep defense line.

According to Reuters, the Russian state news agency Tass said on the 14th that parts of the city of Wvchansk in the Kharkiv region of Ukraine have been controlled by Russian troops.

According to Tass news agency, Russian troops control some areas in the west and north of Vovchansk.

TASS also said street fighting was taking place in Wolfchansk.

In addition, the Ukraine military said on the 14th that the situation in Wvchansk was under control. But the Ukraine military said its troops had to withdraw to new positions due to high-intensity Russian air strikes.

According to reports, the Ukraine military said in its daily war report that in the northern region of Kharkiv, the number of Russian attacks has decreased significantly.

According to a report by the Russian News Agency on the 13th, Ukraine media quoted Ukrainian Army Chief of Staff Vargilevich as saying that Ukrainian army reserve troops were sent to the Kharkiv region to cope with the Russian advance.

According to reports, Balgilevich said: This morning, the enemy intensified its activities in the Vovchansk region and fighting was taking place. We responded quickly to the enemy’s deployment and dispatched reserve troops.

Reports said that earlier on the 13th, Kharkiv State Councilor Skolik said that Russian troops had begun to encircle Vovchansk. He said that very difficult positional warfare is taking place locally. At the same time, France’s Le Monde newspaper quoted a Ukrainian soldier who declined to be named as saying that the Kiev authorities were not ready to defend Wolfchansk and that the region had no necessary means to stop the Russian offensive. (Compiled by Pan Jian)