Qiaofa Machinery Manufacturing Co., Ltd. (Formerly Beijing Drainage Valve Factory) Headquarters: Fangshan District, Beijing Manufacturing Base: Lingcheng District, Dezhou City, Shandong Province Established in 1980 with registered capital exceeding RMB 50 million, our company has evolved through 40+ years of innovation into a modern valve manufacturing enterprise integrating R&D, production, sales, and service. In 2023, we completed corporate restructuring to establish a modern enterprise system, acquiring land in Lingcheng District to build a state-of-the-art production facility.