The production process and raw material raw material of Beijing Great Pack Materials Co.,Ltd's fire sleeve are the same as foreign's. Every index is close to imported products. The fire sleeve is the best alternative to similar imported products. Cable protection tubes for steelworks are also called fire sleeve which is made from woven insulated high purity glass fiber braided sleeve that is heavily coated with silicone rubber. The fire sleeve is used abroad in high temperature operating environment to protect the cable the first to replace asbesto cloth. Asbesto cloth will be powdered long-time work under high temperature to threat the health of workers. While the protective sleeve will not be physical change for a long time under high temperature environment. So it can greatly improve the high-temperature operating environment to protect worker's healthy.