Salt city and dragon vacuum equipment manufacturing ltd. Is registered on the west side of the xianyang county city people's west xinjiang line, with the registration authority being the yangyang county administrative authority, represented by a legal person, and includes the manufacture and sale of vacuum mechanical equipment and spare parts; the sale of mechanical and electrical equipment, metal materials, hardware products, household appliances, electronics, cable cables and chemical equipment. (projects subject to legal approval may not operate without the approval of the relevant department)