... product refers to the following standards: the standard of China Petroleum Ministry of Industry, Ministry of Geology and Mineral Resources, ... in repairing the leakage.Bentonite is used for civil engineering, which is a kind of high viscosity mud soil ... ., Dalian Tairui Chemical Industry Co., Ltd., Dalian Tairui Biological Engineering Co., Ltd., Dalian Tairui Photovoltaic Technology Co., Ltd., Daliang ...