1. Conductor Material: The conductor of the cable is made of solid stranded pure copper. Pure copper has extremely high conductivity, which can effectively reduce losses during power transmission and ensure the efficiency of power transmission. The solid stranded method enhances the mechanical strength of the conductor, making it not easy to break during processing and use, and improving the reliability of the cable. Pure copper also has good ductility and Flexibility, which is convenient for processing into various specifications of wires, and can better adapt to operations such as bending during laying.

2. Insulation layer material: The insulation layer is made of cross-linked polyethylene (XLPE). XLPE has excellent electrical insulation performance, which can effectively isolate current, prevent leakage, and ensure electrical safety. It has excellent temperature resistance and can maintain stable performance in the temperature range of -40℃ to 90℃. Even in high-temperature environments, it is not easy to age and can maintain good insulation effect for a long time. Moreover, XLPE has good chemical stability and can resist the erosion of various chemical substances, prolonging the service life of the cable.

3. Outer layer material: The outer layer is coated with PVC, which is a significant feature of the NYY-NYY-J model. The PVC coating has good moisture resistance, which can prevent moisture from entering the cable and avoid oxidation of the conductor due to moisture. Its corrosion resistance is also outstanding, which can resist the erosion of corrosive substances in the soil, chemical gases in the air, etc. on the cable. At the same time, the PVC coating has strong wear resistance, which can resist damage caused by friction during laying and use, and protect the internal structure of the cable. In addition, PVC materials have relatively low cost and are easy to process, which helps to control the production cost of the cable.

4. Style: The cable has an overall circular structure, with 5 cores stranded together, and the outside is wrapped with an XLPE insulation layer and a PVC coating. The circular structure is convenient for achieving uniform wrapping of various layers of materials during production, ensuring stable performance of the cable. During laying, the circular structure can better adapt to laying environments such as pipes and cable trays, reducing laying resistance. The appearance of the cable is usually black or gray, with a smooth surface and clear marks, indicating the model, specification, number of cores, rated voltage and other information of the cable, which is convenient for users to identify and select.

1. Conductor production: First, the pure copper raw material is smelted to remove impurities, obtaining copper liquid with high purity. Then, the copper liquid is made into solid copper rods through casting technology, and the diameter of the copper rods is adjusted according to the specifications of the Cable Conductor. Next, wire drawing equipment is used to draw the copper rods into Solid Copper Wires of the required diameter. During the wire drawing process, it is necessary to strictly control the drawing speed and tension to ensure the dimensional accuracy and mechanical properties of the copper wires. After that, 5 solid copper wires are stranded in a certain way to form a 5-core conductor. During the stranding process, it is necessary to ensure uniform and tight stranding to enhance the mechanical strength and stability of the conductor.

2. Insulation extrusion: The stranded 5-core conductor is sent to the extruder, and a uniform layer of cross-linked polyethylene (XLPE) insulation is extruded outside the conductor. During the extrusion process, it is necessary to accurately control the extrusion temperature, speed and pressure to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor. The extruded Insulated Wire core needs to be cross-linked, usually by means of high-temperature and high-pressure steam cross-linking, so that the XLPE molecules form a three-dimensional network structure, thereby improving its mechanical strength, temperature resistance and insulation performance.

3. Cabling: Since the cable itself is a 5-core Stranded Conductor structure, after the insulation layer extrusion is completed, the cabling process mainly involves sorting and fixing the insulated wire cores to ensure that the positions between the cores are stable and avoid displacement during subsequent processing.

4. PVC coating extrusion: A PVC coating is extruded outside the cabled insulated wire core. The insulated wire core is sent to the coating extruder, and the PVC material is evenly coated on the surface of the insulation layer through the extrusion die. During the extrusion process, it is also necessary to control the temperature, speed and pressure to ensure that the coating has uniform thickness, flat surface, and is closely combined with the insulation layer. The thickness of the PVC coating must comply with relevant standards to ensure that it can provide effective protection for the cable.

5. Quality inspection: Strict quality inspection is required in all links of the production process. The diameter, resistance, tensile strength, etc. of the conductor are tested to ensure that they meet the specification requirements. The insulation layer is tested for thickness, insulation resistance, voltage resistance performance, etc. to ensure its insulation effect. The PVC coating is tested for thickness, tensile strength, impact resistance, moisture-proof and anti-corrosion performance, etc. Finally, sampling tests are carried out on the finished cable, including partial discharge test, aging test, bending test, flame retardant test, etc., to ensure that all performance indicators of the cable meet relevant standards and design requirements.

1. Packaging materials: The cable is usually packaged with wooden reels or plastic reels. The wooden reels are made of high-quality hardwood, such as pine and fir. These woods are hard, with high strength and toughness, and can bear the weight of the cable and the impact force during transportation. The wooden reels are subjected to anti-corrosion treatment, such as coating with anti-corrosion paint or impregnation, to prevent the wood from getting damp and decaying, and prolong its service life. The plastic reels are made of high-strength plastic, which has the advantages of light weight, corrosion resistance and not easy to be damaged, and is suitable for packaging small-sized and short-length cables.

2. Packaging method: The cable is neatly wound on a wooden reel or plastic reel. When winding, the tension should be controlled to make the cable arrange closely, avoiding looseness and mutual friction. The two ends of the cable are wrapped with plastic film to prevent the ends from getting damp, polluted and damaged. On the side of the wooden reel or plastic reel, the model, specification, number of cores, length, weight, manufacturer, production date, implementation standard and other information of the cable are marked with eye-catching words and symbols, which is convenient for users to identify and accept. For exported products, corresponding international certification marks and English descriptions are also marked.

3. Packaging requirements: The packaging must be firm and reliable, able to withstand various external forces during transportation and loading and unloading, and ensure that the cable does not loosen, wear, deform or otherwise damage during transportation and storage. The size of the packaging should match the length and weight of the cable, and at the same time meet the loading requirements of the means of transport, facilitating loading, unloading and transportation. In addition, the packaging should have certain moisture-proof and dust-proof properties, and a plastic film can be covered on the outside of the wooden reel or plastic reel to further protect the cable from the external environment.

1. Transportation methods: According to the transportation distance, the number of cables and customer needs, different transportation methods can be selected. Road transportation has high flexibility, is suitable for short-distance transportation and door-to-door service, and can quickly deliver the cable to the destination, which is more suitable for small batches and urgent needs of goods. Railway transportation has large capacity, low cost and good stability, and is suitable for medium and long-distance, large-volume cable transportation, which can effectively reduce transportation costs. Water transportation is suitable for long-distance transportation and exported goods, especially for customers in coastal areas. Water transportation has low cost, but the transportation time is relatively long.

2. Transportation precautions: During transportation, the cable reel must be placed horizontally, and it is strictly forbidden to invert or tilt to prevent the cable from sliding off the reel and causing damage. When loading and unloading the cable, special hoisting equipment such as cranes and forklifts should be used, and the hoisting point should be located at the axis of the cable reel to avoid deformation of the cable reel or damage to the cable due to improper hoisting. During transportation, the cable should be avoided from severe impact, vibration and extrusion. The vehicle should run smoothly and try to avoid bumpy roads. At the same time, it is necessary to take moisture-proof, sun-proof and anti-corrosion measures, such as covering the cable reel with a rain cloth to avoid rain, direct sunlight and contact with corrosive substances. During transportation in winter, attention should be paid to preventing the cable from freezing to avoid the impact of low temperature on the performance of the cable.

3. Transportation time: The transportation time depends on the transportation method and distance. Road transportation can generally arrive within 1-5 days, and the specific time depends on the transportation distance and road conditions; railway transportation usually takes 3-10 days, which is affected by railway lines and scheduling; water transportation takes a longer time, with domestic transportation generally taking 7-15 days, and international transportation may take several weeks or even months depending on the route and port conditions.

1. Delivery process: After the customer places an order, the company's sales department will timely confirm the order information with the customer, including product model, specification, quantity, delivery date, delivery location, etc. Then the order information is transmitted to the production department or warehouse. The production department organizes production according to the order requirements, and the warehouse prepares goods according to the order. After the product is produced or taken out of the warehouse, the quality inspection department will conduct strict inspection on the product to ensure that the product quality meets the requirements. After passing the inspection, packaging and transportation are arranged, a suitable logistics company is selected, and a transportation contract is signed with the logistics company to clarify the rights and obligations of both parties. After shipment, the company will promptly notify the customer of the shipment information, including the name of the logistics company, waybill number, estimated arrival time, etc., to facilitate the customer to track the transportation status of the goods.

2. Delivery time: For products in stock, they will generally be shipped within 1-3 working days after the order is confirmed; for products that need to be produced, the delivery time depends on the production cycle, which is usually 5-10 working days. In case of special circumstances such as raw material shortage or equipment failure that may cause delivery delay, the company will communicate with the customer in a timely manner, explain the reasons and negotiate a solution to ensure that the customer's interests are not affected.

3. Delivery location: The company has production bases and warehouses in many regions across the country. According to the customer's geographical location and order situation, the nearest delivery location will be selected to shorten the transportation time and reduce transportation costs. For exported products, they will be shipped from the nearest port to facilitate customs declaration and export transportation of the goods.

1. Sample provision: To enable customers to better understand the quality and performance of the product, the company can provide samples. Customers can make sample requests to the company by phone, email, online platform, etc., indicating the model, specification, number of cores and other information of the required samples. After receiving the sample request, the company will arrange the production of samples or retrieve them from the inventory within 1-3 working days and send them to the customer in a timely manner.

2. Sample cost: The cost of samples is usually borne by the customer, including the production cost, packaging cost and mailing cost of the samples. For long-term cooperative old customers or customers with large order intentions, the company can provide samples for free, and the sample cost will be deducted in subsequent orders. The specific sample cost can be negotiated with the company's sales staff.

3. Sample description: The provided samples have the same material, Structure and Performance as the mass-produced products, which can truly reflect the quality status of the products. The sample will be marked with the model, specification, number of cores, production batch and other information of the product, which is convenient for customers to test and inspect. After receiving the sample, customers can test the appearance, size, electrical performance, etc. of the sample, and can communicate and feedback with the company in a timely manner if any problems are found.

1. Quality assurance: The company promises that the quality guarantee period of this cable is 24 months from the date of shipment. Within the quality guarantee period, if the product fails or is damaged due to its own quality problems, the company will be responsible for free repair or replacement. If the product problem is caused by improper use, incorrect installation, man-made damage, etc. by the customer, the company will provide paid maintenance services and charge the corresponding material cost and working hour fee.

2. Technical support: The company has a professional technical team to provide customers with comprehensive technical support. Customers can turn to the technical team for help through phone, email, online consultation and other ways when encountering problems in product selection, installation, use, maintenance, etc. Technical personnel will reply within 24 hours and provide professional solutions and technical guidance. If necessary, technical personnel can also be arranged to guide on site.

3. After-sales service response: If customers find product quality problems or need after-sales service during use, they can contact the after-sales service department through the company's customer service hotline, email and other channels. After-sales service personnel will get in touch with the customer within 2 hours after receiving the feedback to understand the details of the problem and register it. For general problems, a solution will be given within 4 hours; for problems that need on-site handling, technical personnel will be arranged to arrive at the site for processing within 24-72 hours according to the distance from the customer's location.

4.

Return and exchange policy: Within the quality guarantee period, if the product is confirmed to have quality problems after testing, the customer can put forward a return or exchange application. The customer needs to provide relevant materials such as purchase vouchers, product photos and test reports. The company will review within 3 working days after receiving the application. After approval, the company will arrange return or exchange and bear the relevant transportation costs. For returns and exchanges due to non-quality problems, such as incorrect model selection by the customer, the customer needs to bear the round-trip transportation costs of the product and a certain handling fee. The specific fee standard can be negotiated with the company.

5.

Customer feedback: The company attaches great importance to customers' feedback and has set up a number of customer feedback channels, such as customer service hotline, email, online message board, etc. Customers can put forward opinions and suggestions on product quality, service attitude, delivery speed, etc. The company will arrange special personnel to sort out and analyze the customer feedback regularly, and formulate improvement measures for the existing problems to continuously improve product quality and service level and enhance customer satisfaction.