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, as well as special railway lines, dangerous chemical goods terminals, transport vehicles, and other logistics facilities. Additionally, it offers all-steel radial truck, light truck, and passenger tires, and acrylic products under the Yaxing brand for coatings, chemical fiber, textile, and light industries. It was formerly known as Double Coin Holdings Ltd.