1. High-Density Polyethylene (HDPE): High density, strong, and chemically resistant, mainly used in the production of pipes, bottles, barrels, etc.

2. Low-Density Polyethylene (LDPE): Low density, flexible, commonly used in the production of plastic films, bags, containers, etc.

3. Linear Low-Density Polyethylene (LLDPE): Offers better tensile strength and tear resistance, mainly used for packaging films and stretch films.

4. Ultra-High-Molecular-Weight Polyethylene (UHMWPE): Extremely high molecular weight, with excellent wear resistance and impact strength, commonly used in high-performance engineering materials such as bulletproof vests and medical devices.

1. Excellent Chemical Resistance: Polyethylene is resistant to most acids, bases, salts, and solvents, making it suitable for manufacturing various chemical containers and pipes.

2. Superior Water Resistance: Polyethylene absorbs very little water, making it highly waterproof, ideal for manufacturing water pipes and waterproof membranes.

3. High Impact Resistance: Especially in LLDPE and UHMWPE, they exhibit excellent impact resistance, making them outstanding in applications requiring high impact strength.

4. Electrical Insulation: Polyethylene is an excellent electrical insulator, widely used in the insulation layers of wires and cables and in electrical equipment.

5. Good Processability: Polyethylene is easy to shape through various processing methods (such as injection molding, blow molding, extrusion) to create products of various shapes and sizes.

6. Lightweight and Strong: Polyethylene has a low density but high strength, making it suitable for applications requiring lightweight materials, such as packaging and transportation.

7. Non-Toxic and Odorless: Polyethylene is non-toxic and odorless, meeting the requirements for food contact materials, and is commonly used in food packaging and containers.

8. Recyclability: Polyethylene can be recycled, reducing environmental pollution and contributing to the sustainable use of resources.

Packaging Materials: Such as plastic bags, films, bottles, containers, etc.

Building Materials: Such as pipes, sheets, waterproof membranes, etc.

Agriculture: Such as agricultural films, greenhouse films, irrigation pipes, etc.

Medical: Such as disposable medical devices, pharmaceutical packaging, etc.

Industrial: Such as chemical containers, storage tanks, mechanical parts, etc.

1. Homopolymer PP: Made from the polymerization of propylene monomers, it has higher rigidity and strength.

2. Block Copolymer PP: Made from the copolymerization of propylene and ethylene monomers, it has better toughness and impact resistance.

3. Random Copolymer PP: Made from the copolymerization of propylene with a small amount of ethylene monomers, it has better transparency and flexibility.

1. Excellent Mechanical Properties: Polypropylene has high tensile strength and rigidity, especially in homopolymer PP, making it suitable for high-strength products.

2. Good Chemical Resistance: It has good resistance to most chemicals (such as acids, bases, and saline solutions), making it suitable for chemical containers and pipes.

3. Good Heat Resistance: Polypropylene has a high melting point (160-170°C), allowing it to be used in high-temperature environments without deformation or melting.

4. Electrical Insulation: It has excellent electrical insulation properties, making it suitable for insulating materials in electrical and electronic devices.

5. Low Density: Polypropylene has a low density (about 0.90 g/cm³), providing a lightweight and strong advantage in many applications.

6. Good Fatigue Resistance: It maintains its performance even under repeated bending, making it suitable for products requiring durability, such as binders and bottle caps.

7. Non-Toxic and Odorless: Polypropylene materials are non-toxic and odorless, meeting the standards for food contact materials, widely used in food packaging and medical devices.

8. Recyclability: Polypropylene can be recycled, reducing environmental impact and contributing to sustainable resource use.

Packaging Materials: Such as food packaging, bottles, bottle caps, films, etc.

Household Appliances: Parts for washing machines, refrigerators, etc.

Automotive Industry: Parts like bumpers, dashboards, interior components, etc.

Building Materials: Such as pipes, sheets, flooring, etc.

Textiles: Such as carpet fibers, non-woven fabrics, etc.

Medical Devices: Such as disposable syringes, laboratory supplies, etc.

Aluminum foil is produced by repeatedly rolling aluminum blocks or coils until the desired thickness is achieved. Depending on its use, aluminum foil can be classified into different types, such as household aluminum foil, food packaging aluminum foil, and pharmaceutical packaging aluminum foil.

1. Excellent Barrier Properties: Aluminum foil has good air-tightness and moisture resistance, effectively blocking air, moisture, and light, thereby extending the shelf life of food and pharmaceuticals.

2. Good Corrosion Resistance: The natural oxide layer formed on the surface of aluminum foil effectively prevents corrosion, providing good resistance to humid and acidic environments.

3. Outstanding Thermal and Electrical Conductivity: Aluminum foil has high thermal and electrical conductivity, widely used in electrical components and heating elements.

4. High Reflectivity: Aluminum foil has high reflectivity, effectively reflecting heat and light, commonly used in thermal insulation materials and decorative materials.

5. Non-Toxic and Odorless: Aluminum foil is non-toxic and odorless, meeting safety standards for food contact materials, and is widely used in food packaging.

6. Flexibility and Formability: Aluminum foil is flexible, easy to fold, shape, and wrap, suitable for various packaging needs of different shapes and sizes.

7. Lightweight: Aluminum foil is lightweight, reducing packaging and transportation costs while providing good protection performance.

8. Recyclability: Aluminum foil is recyclable, reducing resource waste and environmental pollution, contributing to sustainable development.

Food Packaging: Aluminum foil is used for packaging various foods such as chocolate, cheese, instant noodles, frozen foods, etc., extending the shelf life of food.

Pharmaceutical Packaging: Aluminum foil is used for making blister packs for pharmaceuticals, providing effective protection and isolation to prevent moisture and deterioration of medicines.

Household: Household aluminum foil is commonly used in cooking and food storage, such as lining baking trays, wrapping food, and refrigeration.

Building Materials: Aluminum foil is used for making insulation and soundproofing materials, such as wall insulation materials, roof insulation layers, etc.

Industrial Applications: Aluminum foil is used for making cable shielding layers, capacitors, heaters, etc., utilizing its excellent electrical and thermal conductivity.

Decorative Materials: Aluminum foil is used for making various decorative materials, such as wallpapers, ceilings, and furniture veneers, providing an attractive appearance and practical functionality.

1. Nylon 6 (PVC6): Made by ring-opening polymerization of caprolactam, it has good wear resistance and toughness.

2. Nylon 66 (PVC66): Made by condensation of hexamethylenediamine and adipic acid, it has higher strength and thermal stability.

1. High strength and toughness: Nylon has very high tensile strength and toughness, able to withstand large mechanical stress and impact, suitable for making high-strength structural components.

2. Wear resistance and fatigue resistance: Nylon has good wear resistance and fatigue resistance, maintaining its performance under repeated use and friction, commonly used for making gears, bearings, pulleys, and other mechanical parts.

3. Chemical resistance: Nylon has good resistance to many chemicals (such as oils, fats, dilute acids, and alkalis), suitable for use in chemical environments.

4. Self-lubricating properties: Nylon has certain self-lubricating properties, reducing friction and wear, extending the service life of components.

5. Heat and cold resistance: Nylon has a wide temperature range for use, maintaining stable mechanical performance at high temperatures, while also having good toughness at low temperatures.

6. Electrical insulation: Nylon has excellent electrical insulation properties, suitable for making electrical and electronic device insulation components.

7. Processability: Nylon is easy to process by methods such as injection molding, extrusion, and blow molding, allowing the manufacture of various shapes and sizes of products.

8. Lightweight: Nylon has a low density and is lightweight, suitable for applications requiring weight reduction, such as automotive and aerospace components.

Textiles: Nylon fibers are widely used in making clothing, socks, ropes, carpets, etc., with characteristics of wear resistance, easy washing, and quick drying.

Automotive Industry: Nylon is used to manufacture fuel lines, cooling system components, interior parts, etc., providing high strength and chemical resistance.

Electronics: Nylon is used to manufacture electrical insulation materials, switches, plugs, sockets, etc., offering good electrical insulation properties and mechanical strength.

Mechanical Industry: Nylon is used to manufacture gears, bearings, pulleys, seals, and other mechanical components, with excellent wear resistance and self-lubricating properties.

Consumer Goods: Nylon is used to manufacture sports equipment, tool handles, toys, kitchen utensils, and other everyday items, providing lightweight and durable performance.

Composite films are usually composed of different types of plastics, metal foils, paper, etc., with common combinations including plastic/plastic, plastic/foil, plastic/paper, and so on.

1. Excellent Barrier Properties: Composite films can combine the barrier properties of different materials to provide good resistance to gases (such as oxygen, carbon dioxide), moisture, oils, and odors, extending the shelf life of products.

2. High Strength and Durability: Composite films integrate the mechanical strength of different materials, offering high tensile strength, tear resistance, and puncture resistance, protecting the contents from external damage.

4. Lightweight and Flexibility: Composite films are lightweight and flexible, easy to process and form, suitable for various shapes and sizes of packaging needs.

5. Chemical Resistance: Composite films can resist corrosion from various chemicals, suitable for packaging chemicals, cleaners, and other products with special packaging requirements.

6. Excellent Printability: The surface of composite films can be printed with high quality, enhancing the appearance and market appeal of products, commonly used for brand packaging.

7. Temperature Resistance and UV Protection: Some composite films maintain stable performance in high or low-temperature environments and provide UV protection, suitable for frozen foods and high-temperature sterilization needs.

8. Anti-static and Radiation Protection: By incorporating specific functional materials, composite films can have anti-static and radiation protection properties, suitable for electronic products and special industrial applications.

Food Packaging: Composite films are widely used for soft food packaging, such as vacuum packaging, gas flushing packaging, frozen food packaging, instant food packaging, etc., providing good freshness preservation and protective performance.

Pharmaceutical Packaging: Composite films are used for blister packaging of medicines, liquid medicine bags, medical dressings, etc., ensuring the safety and effectiveness of medicines.

Daily Chemical Product Packaging: Composite films are used for packaging detergents, cosmetics, personal care products, providing excellent moisture-proof and leak-proof performance.

Industrial Packaging: Composite films are used for packaging electronic components, mechanical parts, chemicals, etc., providing protection against static, moisture, and corrosion.

Agricultural Packaging: Composite films are used for packaging pesticides, fertilizers, seeds, etc., providing good protection and storage conditions.

Building Materials: Composite films are used in the construction field as waterproof and moisture-proof materials, such as roofing waterproof membranes, floor moisture-proof layers, etc.