In general, there are two techniques for reinforcement, one is manually applied one by one, and the other is using automated equipment to be applied by machines. Both of these processes have certain constraints. The former has low production efficiency in manual pasting and requires a large number of operators to meet production needs, resulting in high production costs; The latter has higher efficiency, but requires high equipment costs, as well as higher equipment maintenance costs and requirements.

For steel sheet reinforcement, there are generally two processing methods: metal die punching and etching. Etching steel sheets is a chemical reaction production technology that can produce finer structures without the impact of metal punching. These can be used to design a structure to improve the production efficiency of pasting steel sheets.

Steel sheet reinforcement mainly refers to the reinforcement of 303 stainless steel. 303 stainless steel is a austenitic stainless steel with sulfur and selenium content, which is easy to cut, rust resistant, and wear-resistant. It is used in situations where easy cutting and high surface finish are required. FPC reinforcement often has different shapes, while stainless steel 303 is easy to etch. Therefore, in FPC products that require high stability, this type of steel sheet reinforcement is often used. As the steel sheet reinforcement cannot be drilled using CNC, nor can it be cut using FPC lasers, it is mainly made using the method of chemical etching, and its cost is relatively high