Tangshan Zhouhang Technology Development Co., Ltd. began raising funds to build its factory in 2016. It is a high-tech enterprise specializing in the research, development, production, and sales of dye intermediates. Since its establishment, the company has integrated resources, relied on technological progress, strengthened management, and adhered to a quality-driven development path, striving to produce an annual output of 5,700 tons of anthraquinone series products. The company primarily deals in anthraquinone, 1-chloroanthraquinone, 1,5-dichloroanthraquinone, 1,8-dichloroanthraquinone, 1,5,1,8-naphthalenetetracarboxylic acid, magnesium sulfate, and polyaluminum chloride.