Propylene oxide is mainly used for production of polyether polyols, propylene glycol and various non-ionic surface active agent, which is the production of polyether polyol polyurethane foam, insulation materials, elastomers, adhesives and coatings and other important raw materials, various non- ionic surfactants in petroleum, chemical, pesticide, textile, daily chemical and other industries are widely used. At the same time, Propylene oxide is an important basic chemical raw materials.