Zhejiang Changan Renheng Technology Co., Ltd. is located in Si'an Economic Development Zone, Changxing County, Zhejiang Province. It is located in the northwestern part of Zhejiang Province, on the southwest bank of Taihu Lake, in the center of the Yangtze River Delta, and is a major border trade center. There are 52 large and medium-sized cities including Shanghai, Hangzhou, Nanjing, Suzhou, Wuxi, and Ningbo within a 200-kilometer radius, and it is located in the central area of the Yangtze River Delta economic circle. The Group is mainly engaged in R&D, production and sales of fine bentonite chemicals, and provides technical and equipment support. The Group uses bentonite-based raw materials to produce papermaking chemicals, bentonite for metallurgical pellets, high-quality calcium-based soil and other products. The Group has national invention patents, covering many products, technologies, processes, applications and methods of the Group. The company won one “Zhejiang Science and Technology Progress Third Prize” and two “Second Prize for Municipal Science and Technology Progress”. The Group invests a significant proportion of capital in scientific research and development, innovation and technological innovation every year. Among them, the R&D center is equipped with a variety of scientific research assets, instruments and equipment, and professional software. The Group's papermaking chemicals mainly include: retention aids, filter aids, ink removers, water purification agents and reinforcements. According to the customer's specific production situation, the Group produces customized and suitable products in a timely manner to meet the needs of the customer and bring out the best results of the Group's products. Retention aid and filter aid: The main function is to increase the retention rate of papermaking raw materials, accelerate water filtration, and reduce paper production costs. Ink remover: The main function is to remove ink from waste paper and use waste paper to produce a variety of paper products required in the market. Water purification agent: The main function is to purify waste water from papermaking and improve the recycling rate of waste water. Reinforcer: The main function is to increase the strength and improve the quality of paper products. Among them, “bentonite for binary particulate retention aid” and “environmentally friendly multifunctional clay deinking agent” were recognized as national key new products by the Ministry of Science and Technology in 2008 and 2011, respectively. The bentonite for metallurgical pellets produced by the Group is mainly sold to steel smelters to bind iron ore powder for smelting to improve the smelter's blast furnace production capacity and efficiency. The high-quality calcium-based soil produced by the Group can be used in fields such as water quality purification in aquaculture, as a mildew inhibitor and binder for animal feed, and can also be used as a raw material for further processing of higher-end products. It is also an essential raw material for the Group to develop and produce high-purity water-washed bentonite. Other types of products mainly include organic bentonite and inorganic gels, which are mainly used in the paint preparation industry. The Group mines bentonite mines to develop and produce fine chemicals based on bentonite, which are sold directly to industrial users, and provide customers with application solutions and equipment support. The Group has three marketing management areas in East China, South China and North China. Nearly 30 technical and business specialists are stationed in their areas to directly communicate with customers and develop business. Since its establishment in 2000, the Group has maturely structured the business model of the Group's paper chemical product line, established business relationships with nearly 100 customers, and customized highly adaptable products according to customer requirements.