XiangShengHang Camera Store & Printing
http://www.xiangshenghang.com/sub.asp?cid=73
Phone numbers:
For Epson Inket Photo Quality Printing: 010-64000613
For (Traditional) Photo Printing: 010-84033426
Their shop is located about 15 mins (by foot) north-west of Dong-shi subway (line 5)
here's a map (in chinese)
http://ditu.google.cn/maps?q=%E7%A5%A5%E5%8D%87%E8%A1%8C&hl=zh-CN&cd=1&ei=GJQDTciqEsW0kAXH7PyVCQ&ie=UTF8&view=map&cid=12893916066484743731&iwloc=A&ved=0CDAQpQY&sa=X