Copper content of 99.95% and above, customized to the drawing, no need to open the mold, high protection level, the surface treatment can choose silver-plated, nickel-plated, tin-plated, the thickness of plating can be determined, the insulating material for the resin insulating material, immersion process; high temperature resistance, low temperature resistance, fire retardant; support a variety of shapes to produce a high degree of unity, space-saving, reducing the overlap surface, reduce the cost and other advantages.