Dalian Huan-da Infrared ray Electronic Science&Technology Co., Ltd was established in 1998, it is professionally manufacturer of heating elements. There are high-temperature heating element and low-temperature heating element . High-temperature heating elements and low-temperature heating element is alloy translucency film between two polyesters. It heats by emitting far-infrared rays. It can be used in pet heating pads, mats, clothes and also floor heating system. It is very good and advanced kind of heating element.