... are the only one who imported Germany- made KBA which is the most advanced printing ... subsidiaries: -. Chumboon Iron-Printing & Tin-Making Co., Ltd, set up in 1992 -. Nanhai Chumboon ... Guangzhou Chumxin Metal Products Co., Ltd, set up in 2010 -. Guangzhou Chumboon Tinplate Trading Co., Ltd, set up ... in 2006 -. Tianjin Chumboon Iron-Printing & Tin-Making Co., Ltd, ...