Shanghai environmental science and technology ltd. Is registered in room 3, no. 504, guanghua road, guanghua road, shanghai city, and is registered as the market supervisory authority of the line area, represented by a legal person, in the fields of environmental science and technology, electronic technology development, technology transfer, technical advice, technical services, electronic products, instrument meters, sales of computer software and hardware, mechanical accessories, commercial consultancy (other than brokerage)。