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Common problem

The quality inspection method of di...

The main characteristics that reflect the quality of direct plating are the conductivity of hole wall and the deposition rate of copper plating layer. The condu...

2023/3/31

How to eliminate the possible failur...

Zinc dissolves easily in acids and also in alkalis, so it is called an amphoteric metal. Zinc changes little in dry air. In moist air, the zinc surface will for...

2023/3/31

Common problem