The registered address of the filtration technology company, limited, is located in the forest village of the spa business park of guangan county, maungang city, hebei province. The registration authority is the zheng yang county business administration, with representatives of legal persons, and its operations include the development and transfer of technology for filtering equipment; production, processing and marketing: cores, filters, filters, dust purification equipment, filters, hardware power, mechanical equipment, car parts, plastics (projects subject to the approval of the law and subject to the approval of the relevant authorities)*