During the "Twelfth Five-Year Plan" period, Tongmei Group will invest 33.6 billion yuan to plan and build a circular economy park for coal chemical industry. Include 3 million tons of methanol, 240,000 tons of polyoxymethylene, 600,000 tons of olefins and 240,000 tons of polyoxymethylene. The first phase of the project with an annual output of 3 million tons of methanol is drawing to a close, and the whole park will be completed during the Twelfth Five-Year Plan period. By then, 7.77 million tons of coal can be converted on the spot every year, forming three plastic production bases of formaldehyde, polyethylene and polypropylene. Build a world-class and the largest coal chemical circular economy park in Shanxi Province.