The registration address of shenzhen city science and technology ltd. Is located on the 1st floor of the changhua street in shenzhen city, and is the shenzhen city market supervisory authority, represented by yang zidjin, and covers the fields of information technology, electronics, biotechnology, chemical products, building materials, mechanical equipment, technical advice, technical services, technology transfer; design, technical adaptation, marketing and installation of programmes for research and development, design, marketing and ancillary projects in the areas of intelligent homes, photovoltaic products and led applications; sale of automation equipment, appliances, plastics, gold products, moulds; domestic trade (other than specialty, exclusive sale and controlled goods); export and import operations (other than restricted projects); and investment activities (other projects are declared separately). (except for projects prohibited by laws, administrative regulations and decisions of the state council, restricted projects must be licensed before they can be operated)