Zhejiang Chang'an Renheng Technology Co., Ltd. is located in Si'an Economic Development Zone, Changxing County, Zhejiang Province, located in the northwest of Zhejiang Province, the southwest shore of Taihu Lake, and is located in the central area of ​​the Yangtze River Delta. It is a major border trade center. Within a 200-kilometer surrounding, there are 52 large and medium-sized cities including Shanghai, Hangzhou, Nanjing, Suzhou, Wuxi and Ningbo, located in the central block of the huge economic circle in the Yangtze River Delta.

The Group is mainly engaged in the research, development, production and sales of bentonite fine chemicals, and provides technical and equipment support. The group uses bentonite as the basis of raw materials to produce paper chemicals, bentonite for metallurgical pellets, high-quality calcium-based soil and other products.

The Group has national invention patent authorizations, covering a number of products, technologies, processes, applications and methods of the Group. The company won two awards: "Zhejiang Province Science and Technology Progress Third Prize" and "City Science and Technology Progress Second Prize". The Group invests a considerable proportion of its funds every year for scientific research and development, innovation and technological innovation. The R&D center is equipped with a number of scientific research assets, instruments and equipment, and software.

The group's papermaking chemicals mainly include: retention filter aids, deinking agents, water purification agents and enhancers. The Group produces customized and suitable products in a timely manner according to the specific production conditions of the customer to meet the needs of the customer and to give full play to the good results of the group's products.

Retention and filter aid: The main function is to improve the retention rate of papermaking raw materials, accelerate water filtration, and reduce paper production costs.

Deinking agent: The main function is to remove the ink of waste paper and use waste paper to produce a variety of paper products needed for the market.

Water purification agent: The main function is to purify wastewater generated by papermaking and improve the recycling rate of wastewater.

Enhancer: The main function is to improve the strength and quality of paper products.

Among them, "bentonite for binary particle retention filter aid" and "environmentally friendly multifunctional clay deinking agent" were recognized as national new products by the Ministry of Science and Technology in 2008 and 2011 respectively.

The bentonite clay produced by the group is mainly sold to steel smelters for bonding iron ore powder for smelting to improve the production capacity and efficiency of the blast furnace of the smelter.

The high-quality calcium-based soil produced by the group can be used in the fields of water purification of aquaculture, anti-mold agents and binders for animal feed, and can also be used as raw materials to further process better products. It is also the raw material required for the Group to develop and produce high-purity water-washed bentonite.

Other products mainly include organic bentonite and inorganic gels, which are mainly used in the coating preparation industry.

The group mines bentonite ore to develop and produce fine chemicals based on bentonite, directly sells them to industrial users, and provides customers with application solutions and equipment support. The Group has three marketing management areas in East China, South China and North China, and has nearly 30 technical and business specialists to communicate directly with customers and develop business in their area. Since its establishment in 2000, the Group has maturely formed the business model of the Group's paper chemical product series, established business relationships with nearly 100 customers, and customized highly adaptable products according to customer requirements.