... :2008 3.make as the drawing pressed round metal parts of rotary switch Stamping parts material Ag Cu, brass, bronze, ... CuSn, CuNi, Ni, CuNiZn, and so onWelding point material Ag, AgNi, AgCuNi, and AgSnO2 Application Micro switch, push-button switch ... products exported have been strictly tested and inspected by a group of trained and experienced staff. Various types of shape or size can be ...