The production of polyvinyl alcohol is divided into three ways according to the different raw materials: one is petroleum → ethylene → vinyl acetate → polyvinyl alcohol; the second is natural gas → acetylene → vinyl acetate → polyvinyl alcohol; the third is calcium carbide → acetylene → vinyl acetate → Polyvinyl alcohol.

In recent years, with the advancement of science and technology, some companies use molasses and cassava as raw materials to first make alcohol, and then use alcohol to dehydrate to produce ethylene, take the route of alcohol and ethylene, develop the polyvinyl alcohol industry, and replace non-renewable alcohol with renewable resources. Resources. With the reduction of non-renewable resources and the increase in prices, this process route will gain more room for development in the future competition.