Shanghai Huayi Group Corporation Limited is a chemical company based in Shanghai, China, founded in 1997. It produces methanol, acetic acid, carbon monoxide, ethyl acetate, synthesis gas, and clean energy products for industries such as medicine, agriculture, construction, textiles, and new energy vehicles. The company also provides support services for water, electricity, steam, and other public works, along with special railway lines, dangerous chemical goods terminals, transport vehicles, and logistics facilities. Additionally, it offers all-steel radial truck, light truck, and passenger tires, as well as acrylic and acrylate products under the Yaxing brand for coatings, chemical fiber, textile, and light industries. The company was formerly known as Double Coin Holdings Ltd.