1. The electro-zinc plating process should use an environmentally friendly cyanide-free electroplating process; passivation cannot use a process containing hexavalent chromium. Except for fasteners, there cannot be any "sealing" type processing operations in the post-plating treatment process.

2. Electroplating zinc-nickel alloy process, the nickel content in the coating is 12 to 16% (mass percentage), and the rest is zinc.

3. Electroplating nickel (including bright nickel, matte nickel, black nickel) process, the steel substrate must be plated with copper first and then nickel.

4. The process of electroplating decorative chromium (including bright chrome and sandblasted matte chrome) must be a copper-nickel-chromium electroplating process for the steel substrate.

5. The electro-tin plating process requires copper or nickel bottom plating. The tin plating process is divided into two types: ordinary tin plating and "high temperature tin" plating. Pure tin plating should use matte tin (or matte tin). The tin plating process should be pure tin and avoid whiskers. When the underlying nickel is electroless nickel plating, the phosphorus content in the coating must be controlled between 5% and 9% (mass percentage).

6. In the silver electroplating process, any base material must be plated with nickel (or nickel alloy) first and then silver, and the nickel layer must be a low-stress plating. When the underlying nickel is electroless nickel-phosphorus alloy plating, the phosphorus content in the coating must be controlled between 5% and 9% (mass percentage).

7. In the electroplating gold process, any base material must be plated with nickel (or nickel alloy) first and then gold plated, and the nickel layer must be a low-stress plating layer. When the underlying nickel is electroless nickel-phosphorus alloy plating, the phosphorus content in the coating must be controlled between 5% and 9% (mass percentage).

8. For the electroless nickel plating process, the phosphorus content in the coating must be between 5% and 9% (mass percentage).