GTS Chemical Holdings plc, an investment holding company, manufactures and distributes ammonium sulfite and bisulfite in China. It operates through Solid Ammonium Sulfite, Liquid Ammonium Sulfite, Liquid Ammonium Bisulfite, Lubricant Oil, and Recarburizer segments. The company offers ammonium sulfite in liquid and solid forms, which are used in pharmaceutical, food, petroleum, chemical engineering, and paper making industries; and ammonium bisulfite in liquid form that is used as a preservative and reducing agent in the petroleum drilling, water treatment, and chemical engineering industries, as well as for industrial desulfurization. It also blends and distributes lubricating oil products under the Ogistar, Changyun and Qiaoke brands, including engine and gear oils, coolants, and antifreeze products for automotive and industrial users. In addition, the company engages in trading recarburizers, such as coal, steelmaking, cast steel, calcined coal, and anthracitic coal recarburizers for small/medium sized customers. GTS Chemical Holdings plc was incorporated in 2014 and is based in Liaocheng, China.