... Iron-Printing & Tin-Making Co., Ltd, set up in 1992 Nanhai Chumboon Iron-Printing and Tin-Making Co., Ltd, set up in 2005 ... Guangzhou Chumxin Metal Products Co., Ltd, set up in 2010 Tianjin Chumboon Iron-Printing & Tin-Making Co., Ltd, ... set up in 2010 Guangzhou Chumboon Import & Export Trading Co.,Ltd. set up in 2011 ...