Hunan Xijiesi Building Materials Technology Co., Ltd.

I. Company Overview Hunan Xijiesi Building Materials Technology Co., Ltd. is located at the foot of the scenic Yuelu Mountain in Changsha, Hunan. It was founded in 2009 by Professor Shi Caijun, a high-level overseas returnee. The company is an integrated platform for production, education, and research, a high-tech chemical building materials enterprise integrating R&D, production, and sales of cement grinding aids and concrete admixtures. The company has a registered capital of 8 million RMB. In July 2013, the company changed its name from the original "Hunan Xijieshi Building Materials Technology Co., Ltd." to "Hunan Xijiesi Building Materials Technology Co., Ltd." II. Company Scale The company's production site at its Hunan headquarters covers an area of more than 6,000 square meters, with a building area of more than 4,000 square meters. It has a production base in Yixing, Jiangsu—Yixing Xijiesi Building Materials Technology Co., Ltd. Its annual production capacity of cement grinding aids reaches more than 50,000 tons, and its production capacity of concrete admixtures exceeds 100,000 tons. It is a relatively large private technology enterprise in Central and Southern China producing cement grinding aids and concrete admixtures. III. Company Founder and Chief Technical Executive Officer Professor Shi Caijun Professor Shi Caijun, the company's Chief Technical Executive Officer, is a world-renowned expert in cement and concrete chemistry, former Chief Scientist of cement grinding aids and concrete admixtures at the R&D Center of W. R. Grace & Co. in the United States, Fellow of the American Concrete Institute, Special-Appointed Expert, Hunan Province Special-Appointed Expert, 985 Chief Scientist at Hunan University, and doctoral supervisor. He is Editor-in-Chief of the UK academic journal Journal of Sustainable Cement-based Materials, Associate Editor of the American Society of Civil Engineers journal Journal of Materials in Civil Engineering, and editorial board member of the internationally renowned English academic journals Cement Concrete Research and Cement Concrete Composites, as well as the Journal of the Chinese Ceramic Society. He is a registered professional engineer in Ontario, Canada, and a member of multiple professional committees including the American Concrete Institute, ASTM International, and the Canadian Standards Association. He is a lecture professor and doctoral supervisor at Central South University, a professor at Chongqing University and South China University of Technology, and an adjunct professor at the State University of New York Cement City Campus, Nanjing Tech University, and Wuhan University of Technology. He was elected Fellow of the International Energy Research Society in 2001, Fellow of the American Concrete Institute in 2007, and was selected for the national "*" in 2009. IV. R&D Technology Platform The company uses modern production technology and is equipped with multiple internationally advanced testing instruments, including gas chromatography, liquid chromatography, and laser particle size analyzers. It has an advanced R&D center and several dedicated R&D personnel. It has applied for 5 invention patents, 3 of which have been authorized, and is responsible for drafting the international standard draft "Methods for Determination of Raw Materials for Cement Grinding Aids." The company's grinding aid application technical personnel have decades of experience in the research and use of cement and concrete chemistry, cement additives, and concrete admixtures, and enjoy a high reputation in the international and domestic fields of cement, concrete, cement additives, and concrete admixtures. V. "Xijiesi" Products The company develops and produces multiple series of "Xijiesi" brand cement grinding aids and concrete admixture products with independent intellectual property rights, strictly complying with the national standards GB/T 26748-2011 "Cement Grinding Aids" and GB8076-2008 "Concrete Admixtures," as well as the requirements of American ASTM C 465 "Standard Specification for Processing Additions for Use in the Manufacture of Hydraulic Cements." The use of "Xijiesi" cement grinding aids has a significant effect on cement production enterprises in increasing grinding output, improving cement quality, increasing the amount of mixed materials, saving energy consumption in cement production, reducing carbon dioxide emissions, and improving enterprise economic benefits. According to the deficiencies of concrete, selective addition of "Xijiesi" concrete admixtures can significantly improve and optimize concrete performance.