1. FR-4 A1 grade copper clad plate This grade is mainly used in electronic products such as military, communication, computers, digital circuits, industrial instruments and meters, and automotive circuits. The quality of this series of products has completely reached the world-class level, making it the highest grade and best performing product of our company.

　　FR-4 A2 grade copper clad plate is mainly used for ordinary computers, instruments and meters, high-end household appliances, and general electronic products. This series of copper-clad laminates is widely used, and all performance indicators can meet the needs of general industrial electronic products. There is a good price performance ratio. Can effectively enhance price competitiveness for customers.

　　3. FR-4 A3 grade copper clad plate This grade copper clad plate is a FR-4 product developed and produced by our company specifically for the home appliance industry, computer peripheral products, and ordinary electronic products (such as toys, calculators, game consoles, etc.). Its characteristic lies in its competitive price while meeting performance requirements.

　　4. FR-4 AB grade copper clad plate This grade of plate is a unique low-end product of our company. However, all performance indicators can still meet the needs of ordinary household appliances, computers, and general electronic products, with the most competitive price and excellent performance to price ratio.

　　5. FR-4 B-grade Copper Clad Sheet This grade of sheet is a secondary product of our company, with poor quality stability and is not suitable for large area circuit board products. Generally, it is suitable for products with dimensions of 100mm x 200mm. It has the lowest price, but customers should pay attention to choosing to use it.

　　The CEM-3 series copper-clad laminates are produced by our company in three substrate colors: white, black, and natural. Mainly used in the computer, LED industry, clocks, general household appliances, and ordinary electronic products (such as VCDs, DVDs, toys, game consoles, etc.). Its main feature is good punching performance, which is suitable for large-scale PCB products that require stamping process forming. This series of products comes in three quality levels: A1, A2, and A3. Customers with different requirements can choose to use them.