Shenzhen excerpts and technology ltd. Has registered addresses in 6 412 of the 1970 science and technology parks of the hanhua neighbourhood of shenzhen city, with the registration agency shenzhen city market supervision authority, with legal representatives, and covers instruments, experimental consumables, communications equipment, electronics, cultural office supplies, hardware equipment, surveillance equipment, sale of construction and decoration materials; development and sale of laser instruments and assistive equipment; maintenance and maintenance of laser instruments; technical development and sale of computers, software and assistive equipment; advice, development, marketing of computer software, information system software; design, integration of information systems; export and import operations (excluding distribution, state-owned and exclusive commodities); domestic trade (without specialty, exclusive sale, specialized commodities); manufacture of metal-processing machines; manufacture of general-purpose equipment (without special equipment); manufacture of mechanical parts, parts and components; manufacture of electronware; handling and handling of cargo agents. (in addition to projects subject to legal authorization, the operation of the business is carried out autonomously under a licence)