The registration address of hanqing technology ltd. In shenzhen city is located on the 139th floor of the chinese-shin city industrial district of shenzhen city, located on the 139th floor of the hanqing tsun shading street zone in shenzhen city. The registration authority is the shenzhen city market supervision authority, represented by a legal person, wang weihua. The licensed projects are: electromechanical equipment, engineering kits, industrial process systems, energy-saving system engineering, development, production, door-to-door installation, maintenance and maintenance of medical gas system equipment; medical vacuum-negative unit, dental gas-absorption-absorption unit, vacuum pump pump-exhaustion unit, bacterial filters, design of vacuum equipment, development, production, marketing and related technology development and advice; and development, production, sale, maintenance and maintenance of type ii medical devices and type iii medical devices。