Go back to work. Mentougou Chemical Plant (Beijing Dayu Chemical Co., Ltd.) has resumed work. Beijing Dayu Chemical Co., Ltd. was established in 1979, located in Beijing, and is an enterprise mainly engaged in pharmaceutical manufacturing. Main business: manufacturing potassium permanganate; Technical consultation and transfer; Information consultation (except intermediary); To engage in the export business of products and technologies produced by the enterprise and its member enterprises; Enterprise management. (Enterprises independently choose business projects and carry out business activities according to law; Projects that must be approved according to law shall, after being approved by the relevant departments, carry out business activities in accordance with the approved contents; Shall not engage in business activities of projects prohibited and restricted by the industrial policies of this Municipality).