1. It includes three parts: front-end base assembly, buffer line and rear-end panel assembly; 

2. The front-end base assembly includes the assembly and inspection of parts such as base, screws, terminals, L-pole sockets, N-pole sockets, E-pole sockets, and pressure plates; the rear panel assembly includes mounting brackets, two Assembly and inspection functions of plug-in protection door, spring, three-plug protection door and panel;

3. Both the front and rear sections use annular lines to transport products, and the positioning accuracy reaches ±0.05mm, which ensures the assembly positioning accuracy of the product, and has efficient and stable transmission efficiency;

4. Recheck the product assembly quality through visual inspection to ensure that there is no leakage of products with poor appearance such as missing or scratches;