Hi there, Do you know toner cartridge? That&＃39;s the prduction of us ,AG.COM Cheong-un Co., Ltd. We are locate in Baishi Industry Zone, Sanxiang Town, Zhongshan City, Guangdong Province, which is adjacent to Hong Kong and Macau.Many years before, we produced toner cartridge and OPM gear, maybe you still could find some of them around the world.We supply all kinds of toner cartridges and OPM gears....IF you want to know more about our company ,please log onto our wet site www.Cheong-un.com