Shanghai yousheng printers consumable Co. Ltd. (as  the  “Yousheng” here   in   after),   headquarter located in  Songjiang  District,   Shanghai,   cover   an area of 1000 square meter. Our company has already passed  the  ISO9001   international   quality   system authentication as well as the ISO14001 environment system authentication.  The  toner  cartridge  factory is  in  Zhuhai Guangdong, area is 2000 square meter. R&D department located at Taoyuan Taiwan.