The main investment of roller scraping and filling is the special machine for plugging. Its construction method is different from that of screen printing plugging. Its […]

The term plug hole is not a new term in the printed circuit board industry. In the early etching process of the outer layer circuit, in […]

5. Exposure The liquid photoresist undergoes a cross-linking polymerization reaction after being irradiated with UV light (300-400 nm), and the part exposed to the light forms […]

Introduction: In the PCB manufacturing process (Technology), whether it is a single, double-sided or multi-layer board (MLB), one of the most basic and critical processes is […]