The registered address of huang jia seal materials ltd. In hebei province is located on the eastern side of the city of dejiang, the city of fuzhou city, with the registration authority being the river city market supervision authority, represented by li li li wei, and which covers the sale of metal seals, asbestos-free pads, mechanical seals (except for the state industrial policy restriction category, phase-out category) and the sale of rubber products, plastics, seals, insulations, temperature protection materials, water protection materials, fire protection materials. (projects subject to legal approval may not operate without the approval of the relevant department)