The registration address of de qinghua filtering equipment, ltd., is located in room 747, located in the building no. 2 at the centre for entrepreneurship, located on the northern side of wu qingdong province, in tianjin city. The registration authority is the market supervision authority of wu qing district, tianjin city. The legal entity is represented by kwok qing, and its operations include the manufacture and sale of filtering equipment, purification equipment, dust removal equipment and accessories; the sale of filtering materials, compressors and accessories; and the design, installation and related technology development, consultation, transfer of drying equipment. (projects subject to legal approval may not operate without the approval of the relevant department)