First: FR-4 copper clad laminate, class A1

This level is mainly used in military industry, communication, computer, digital circuit, industrial instruments, automotive circuits and other electronic products. The quality of the series of products has reached the world-class level, the highest grade and the best performance products.

Second: FR-4 class A2 copper clad laminate

This level is mainly used for general computers, instruments, advanced home appliances and general electronic products. This series of copper clad plates are widely used, and all the performance indexes can meet the needs of general industrial electronic products. There is a good price performance ratio. It can make customers improve the price competitiveness effectively.

Third: FR-4 grade A3 copper clad laminate

This grade copper clad board is a FR-4 product specially developed and produced by the company for the household appliances industry, computer peripheral products and general electronic products (such as toys, calculators, game machines, etc.). The characteristics of the price are competitive when the performance meets the requirements.

Fourth: FR-4 grade A4 copper clad laminate

This grade of sheet is FR-4 copper clad plate low-end material. But the performance indexes can still meet the needs of ordinary household appliances, computers and general electronic products. The price is the most competitive and the performance price ratio is also quite excellent.

Fifth: FR-4 class B copper clad laminate

The board of this grade is relatively poor, and the quality stability is poor, which is not suitable for the circuit board products with large area, and generally applicable to products with the size of 100mmx200mm. It is the cheapest price, so we should pay attention to the choice of use.