|
The integration of computer information system, the design and implementation of communication information network system, the maintenance of communication network and equipment, the development of computer application software, the optimization services of communication network, the design, construction (installation)and maintenance of security technology prevention projects (system), the R&D and design of refrigeration and air conditioning equipment (refrigeration and air conditioning equipment in computer room, base station fresh air conditioner). the sale, installation, maintenance and technical service of refrigeration and air conditioning equipment, the operation and maintenance services of computer room, data center and relevant electromechanical facilities. the sale of intelligent unmanned aerial vehicle, the aerial photography, the aerial patrol and photo taking, the installation, repair and test of electric power facilities (low voltage, medium voltage and high voltage) (within the company's licensed scope), the sale, overhaul and relevant after-sales service of low voltage, medium voltage and high voltage power equipment |
