1High-performance flame retardant material with high temperature resistance, corrosion resistance and wear resistance. 2The internal copper parts are made of high-performance copper material and the contacts are silver plated, which is stable and reliable. 3Silver contacts, quick response and sensitive action. 4Wiring terminal quenching treatment, environmental protection plating, with good torsion tolerance and anti-rust effect. 5High electrical life and mechanical life, mechanical life up to 20,000 times. 6Widely used in residential lighting, distribution lines, etc.