This t-shaped cable is a supporting product of graphene electrothermal film. The This T cable for graphene electrothermal film products, use more strands of oxygen-free copper wire core, the international 2 * 2.5 square millimeter, every 45 cm and air a fast connection, using error prevention bayonet type design, tighten screw type, used to connect with floor heating electrothermal film, this T head can be customized according to customer requirements, from 1 to 108 head, according to different environment to use, safe and reliable.