Sexual copper clad laminate (plastic composite) is composed of winding insulating base film and metal foil. The wound copper clad laminate composed of copper foil, film and multilayer materials is called multilayer wound copper clad laminate (referred to as "3L-FCCL"). Adhesive-free wound copper clad laminate is called two-layer wound copper clad laminate ("2L-FCCL" for short).Applications include mobile phones, electronic products, smart homes, automobiles, computers, etc.