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