Shandong Yanggu Huatai Chemical Co., Ltd. engages in the research and development, production, and sale of rubber additives. Its products include antiscorching agent N-(Cyclohexylthio)phthalimide (CTP), insoluble sulfur, rubber masterbatch, accelerator N-cyclohexyl benzothiazole sulfenamide (CBS), and microcrystalline paraffin. The company was founded by Chuan Hua Wang in 1994 and is headquartered in Liaocheng, China.