Shenzhen Chenggong Trade Co., Ltd.( Size(mm): 230x113x65/or 50/or 40/or 30/or 25/or 20, 200x200x20/or 15, 150x150x30/or 20/or 15, 150x75x30/or 20/or 15, etc. Specification: Hygroscopicity: 2%Max; ...