Zhejiang Chang'an Renheng Technology Co., Ltd., together with its subsidiaries, researches, develops, produces, and sells bentonite fine chemicals in the People's Republic of China. The company uses bentonite to manufacture papermaking bentonite chemicals, bentonite for metallurgy pellet, calcium-bentonite, organic bentonite, and other products; inorganic gel; putty powder; dry strength agent; and other chemicals, such as f