The registration address of the company is located at no. 663 in the village of quanang township, guangangang county, hebei province. The registration authority is li qian, the legal representative of the san an county market supervision authority of the city, and its operations include environmental equipment, dust removal equipment, filtering equipment, purification equipment manufacture, processing and sale; development of hydraulic oils; sale of: filtration cores, filters, oil filters, purification equipment, dust removal equipment, dust removal plastics, seals, spare parts for air presses, engineering machines, filtering equipment and accessories, valves, hardware, accessories, filters, filters, paper filtering, instrumentation, filtering equipment; import and export of goods (subject to the approval of the law and to the authorization of the relevant authorities)*