The registration address of the firm is located at no. 8 iyun street, village of the sanctuary of the sanctuary of sanctuary and leisure business park in guangangang city, hebei province. The registration body is the market supervision authority of manguan county, with representatives of legal persons and includes the production, sale and sale of: core, filter, filter, purification equipment; sale of: dust removal equipment, filtering equipment components, instrumentation forms, hardware products, filtering materials; technical research and development of filtering equipment, transfer of technology (subject to the approval of the law and to the authorization of the relevant authorities)*