... Shandong Zhongtian Industry Co., Ltd (Former Name: Jinan Dinghan Building Materials Co., Ltd, and Jinan Donghan Building Materials Co., Ltd), it mainly produces ... which received high reputation from the customersZhongtian Industry Co., Ltd covers an area of 100,000 Square Meters, ... “credit and win-win policy”, Zhongtian Industry Co., Ltd has established friendly and steady cooperation relation with ...