The Rigid foam combination polyether of Sinopolymer are polyether polyol compositions based on various foaming systems such as 141B, pentane or all-water, which are suitable for the production of various rigid foams, such as plates, coatings, pipes, refrigerators, small household appliances and other fields. The product has higher functionality and flame retardancy, moderate viscosity and strong adaptability, and can provide rigid polyurethane foam with better dimensional stability and mechanical properties and good flame retardancy. O that the product structure is more stable and reliable. (Note: As there are too many types of products involved, only the scope is described, and the actual products will be produced according to the customer's requirements)