Composite polyether is a raw material system of polyurethane foam, which is mainly composed of polyether polyols, catalysts, foaming agents, foam stabilizers and other components. Composite polyethers for shell-and-tube LNG (liquefied natural gas) have good thermal insulation properties, and they are able to form polyurethane foams with high cell closure. The closed-cell structure can effectively prevent the transfer of heat, and we focus on the development of polyurethane pipe shell raw materials in the field of LNG cryogenic pipelines and LPG pipelines. With a unique innovative concept of high-performance cold insulation, its solutions are suitable for the range of -196C to 120C, providing perfect raw materials for various pipe support products to ensure the efficient and safe operation of pipelines.