... of Shandong Zhongtian Industry Co., Ltd (Former Name: Jinan Dinghan Building Materials Co., Ltd, and Jinan Donghan Building Materials Co., Ltd), it mainly produces the high quality Metal ... , Copper Vein, Oil Rubbed Copper, which received high reputation from the customersZhongtian Industry Co., Ltd covers an area of 100,000 Square Meters, initially ...