It is made of high quality calendered copper foil, electronic insulating mylar film and high temperature resistant metal special resin compound, baked and dried at high temperature, then slit and cut into ribbon products, which can meet the high standard requirements of high frequency. It is mainly used in high frequency cables with high requirements, as EMI shielding package for communication and electronic wires and cables, such as communication cables, LAN cables, signal lines, coaxial cables, etc.