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Zhejiang Tianshi Nano-Tech Co., Ltd. was founded in the reign of Xianfeng of Qing Dynasty. After nearly two centuries of hard working, Zhejiang Tianshi Nano-Tech Co., Ltd. has grown into a leading enterprise of Calcium carbonate industry of China. We were recognized as a national high-tech enterprise in 2008 and become a group leader unit of Calcium carbonate working group of Inorganic Chemicals Branch of National Chemical Standardization Technical Committee in 2009. As a hi-tech research, production and trade enterprise established on joint-stock system, we are mainly engaged in the research and development of nano-technological products, and the production and trade of Calcium carbonate, Calcium hydroxide and calcium oxide products.Tianshi takes "honest business, common development" as philosophy and "using gifted rocks from nature to produce high-end products for human being" as idea of company. Under the supports of advanced production equipment, leading technology and management system, outstanding performance, reliable quality and products, we are doing our best to meet customers' demands. Tianshi is the most honest and reliable partner of you regardless of today or future. We look forward to your cooperation!