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Inner layer etch

Inner layer ETCHING

Inner etching: The etching solution used, the main component of acid sodium chloride etching solution and alkaline sodium chloride etching solution, the resist is a dry film, liquid photoresist, which is generally suitable for multi-layer printing Board inner circuit board production of the circuit board or microwave PCB negative version of the direct etching graphics production.

Its main features: 1. Etching rate easy to control, the etching solution in the steady state can achieve high etching quality

2. Large amount of copper

3.Etching solution easy to regenerate and recovery, thereby reducing pollution.

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