shang hai Technology Development Co., Ltd. is a manufacturer of office consumables and a member of the China Computer Industry Association (CCIA). We specialize in manufacturing, marketing, and sales of compatible Lexmark, HP, and Canon inkjet cartridges (with printing head) and HP, Canon, Samsung, Brother, and Lenovo toner cartridges and ink cartridge ,chip,toner , . . shanghai printer Technology Development Co., Ltd. has two manufacturing bases in Beijing, Hai Dian District and Change Ping District respectively.