2.pem is a patented engineering material of an American company. The data show that it is a kind of fiber with different sizes, different density and accuracy of each layer. Through a series of complex chemical reaction processes, it has good filtration performance and physical and chemical properties, and has good environmental protection effect.
3. Products are widely used in mobile phones, computers, industry and other industries.
4. It is the largest supplier of sheet metal processing industry.
5. Its main products are: self-locking nuts, self-locking columns, self-locking bolts, non-falling screws and other more than 30,000 kinds of products.