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Dong'a Dongchang Tianhui Technology Co., Ltd. was established in February 2006 under the control of Dongchang group. Located in dong'a County, Shandong Province. Dongchang group is a large-scale private enterprise group which integrates cement grinding aid, cement, coal chemical industry and aluminum curtain wall board, with an annual sales revenue of 3 billion yuan. The company and Jinan University jointly established "Jinan University Tianhui science and technology cement and concrete admixture Research Institute", and jointly developed more than 20 varieties of six series of grinding aids, namely, liquid cement grinding aids, liquid mineral powder grinding aids, special grinding aids for cement vertical grinding, special grinding aids for mineral powder vertical grinding, liquid retarder and concrete admixture. It is suitable for all kinds of general cement and mineral powder. The company has three automatic production lines controlled by microcomputer, with an annual production capacity of 100000 tons; it has a comprehensive laboratory, under which there are cement material inspection room, concrete material inspection room, analysis room and synthesis room. Equipped with gas chromatograph, laser particle size analyzer, flame photometer, distillation process tester, experimental reactor and other instruments, in strict accordance with GB / t26748-2011 and ISO9000 certification, ISO14000 certification, OHSAS18000 certification, standard requirements, raw materials into the factory, production process, finished products factory inspection control.

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