(c) production of metal products; manufacture of hardware and equipment; manufacture of plastics; manufacture of plastics; manufacture of electrical equipment; manufacture of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; exchange of electrical equipment; sale of electrical equipment; sale of electrical equipment; exchange of electrical equipment; sale of electrical equipment; sale of electrical equipment; exchange of electrical equipment; sale of electrical equipment; sale of electrical equipment; and exchange of electrical equipment; sale of electrical equipment; sale of electrical equipment and mechanical equipment. Licensed projects: special equipment manufacture (projects subject to legal approval, subject to the approval of the relevant department, for the operation of the business, subject to approval)。