... five subsidiaries: 1. Chumboon Iron-Printing & Tin-Making Co., Ltd, set up in 1992 2. Nanhai Chumboon Iron-Printing ... Making Co., Ltd, set up in 2005 3. Guangzhou Chumxin Metal Products Co., Ltd, set up in 2010 4. Guangzhou Chumboon Tinplate Trading Co., Ltd, ... set up in 2006 5. Tianjin Chumboon Iron-Printing & Tin-Making Co., Ltd, set up in 2010Related ...