Zhou zhou qianxian is represented by a legal person, whose registered address is located in the village of the border town of salt hill county, the market supervision authority of salt hill county, and whose operations include the manufacture of the seller's holes, valves, hangers, pyrotechnic plume equipment, compensatory units, pipes, fittings, attachments to power plants, frank, bending, tritons, grinding tubes and pumps. (projects subject to legal approval may not operate without the approval of the relevant department)