Shanghai longko science and technology ltd. Has its registered address in room 4393, no. 3,688, no. 5, no. 4,393, shanghai city's golden hills pitt guard road, with the registration authority of the golden mountain market supervisory authority, represented by a legal person, and operating on a licensed project: construction works. (projects subject to legal approval and subject to approval by the relevant department for the commencement of business activities, subject to approval of documents or licences by the relevant department) general items: technical services, technology development, technical advice, exchange, technology transfer, technical promotion; development of electronic-specific materials; sale of pumps and vacuum equipment; sale of new membrane materials; sale of instrument instruments; sale of communications equipment; sale of laboratory analytical instruments; sale of machinery equipment; sale of refrigeration, air-conditioning equipment; sale of electronic products...