GTS Chemical Holdings plc is an investment holding company. The Company is engaged in manufacturing ammonium sulfite and ammonium bisulfite, blending and distribution of lubricating oils and trading of recarburizer. Its segments include Specialty Chemicals, including Solid ammonium sulfite, Liquid ammonium sulfite and Liquid ammonium bisulfite; Lubricant oil and Recarburizer. The Company's Specialty Chemicals segment manufactures ammonium sulfite products mainly from waste materials. Its Lubricant oil segment blends and distributes lubricating oils, such as engine oil, gear oil, brake fluid, antifreeze and cutting fluid, and related products under the Ogistar, Changyun and Qiaoke brands. Its Recarburizer segment buys coal, steelmaking, cast steel, calcined coal and anthracitic coal recarburizers in bulk and distributes them to small/medium sized customers. Its subsidiaries include Runtai Environment Protection International Limited and Shandong Tiantai Steel-Plastic Co., Limited.