The registered address of shanghai all crown valves manufacturing company limited is located on the 2nd floor of chau tong road in the bayghuen district of shanghai, with the registration authority being the market supervisory authority of the baymen district and with the legal personality representing yang zhang and covering general projects: manufacture of ordinary valves and rotors (other than special equipment manufacture) (run by limited branches); sale of valves and rotors; sale of architectural and ornamental materials; wholesale distribution of hardware products; retail sale of hardware products; sale of metal materials; sale of wind and electric tools; sale of labour protection supplies; sale of fire protection equipment; sale of machinery equipment; sale of instrument instruments; sale of ecological environmental materials (run autonomously under a licence, except for legally authorized projects)。