Stock polyether-2040, the L64 Jiangsu, 2040, L64 polyether classified polyether polyol (referred to as polyether) is provided by the initiator (the active hydrogen group-containing compound) with ethylene oxide (EO), propylene oxide (PO ), butylene oxide (BO) in the presence of a catalyst prepared by the reaction by the addition polymerization. Polyether yield by as initiator and an epoxide (ships with PO and EO), glycerin (glycerol) ratio by changing the PO and EO feed (mixed or separately added), add, The addition order, and other conditions, the production of a the various generic polyether polyol. Polyether (polyether polyol) is an important derivative production of polyether product of propylene oxide, is one of the main raw material for the synthesis of polyurethanes.