The registration agency is the shenzhen market supervisory authority, represented by a legal person, and includes the sale of labour protection items, hardware, office supplies, industrial aids, security equipment, craft gifts, clothing and related technical advice; the sale of fire protection equipment; maintenance of the roofs of security equipment and electrical tools; domestic trade; import and export operations; sale of electronic products; radiation protection products, radio-screened products, cleaning materials, hardware construction materials, plastics, plastic packaging materials; and training of products. The first category of medical equipment is sold; the second category of medical equipment is retailed; the second category of medical equipment is retailed. The sale of smart instrument instruments; the sale of instrument instruments; the sale of laboratory analytical instruments; the sale of technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; the sale of daily chemical products; the sale of automobiles; business training (not including training in education, vocational skills training, etc. For which authorization is required); and the sale of disinfectants (excluding hazardous chemicals). (in addition to projects subject to legal authorization, operations are carried out on an autonomous basis in accordance with the legal licence) category ii medical equipment sold; category iii medical equipment operated. (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)