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　　　　What are PCB vias? Vias are the most common type of circuit board. When making, you only need to drill holes on the circu

　　　　PCB circuit boards are the core components of electronic products, which are widely used in automotive, security, medical

　　　　In the transmission signal line of electronic devices, the resistance encountered when the high-frequency signal or elect

　　　　1. The full name of BT resin is the "Double Authority Sanxian Resin" developed by Japan Mitsubishi Gas Company.

　　　　The packaging substrate is the largest cost of IC packaging, accounting for more than 30%. IC packaging costs include pac

　　　　Today's electronic and electrical products are developing in the direction of precision, easy installation and long l