Anhui Wanwei High Tech Materials Co., Ltd. is the core subsidiary of Anhui Wanwei Group Co., Ltd., has five R & D institutions such as national enterprise technology center, post doctoral workstation and skill master studio. Anhui Wanwei Group Co., Ltd. is a large enterprise under the jurisdiction of Anhui state owned assets supervision and Administration Commission. Formerly known as Anhui vinylon factory, it was founded in 1969 and is a key project invested and constructed during the fourth five year plan period. The group company has six subsidiaries. The core subsidiary Anhui wanwei high tech materials Co., Ltd. was listed on the Shanghai Stock Exchange in May 1997 (the stock name is wanwei high tech and the code is "600063"). Wanwei group is an important joint manufacturing enterprise of chemical industry, chemical fiber, building materials and new materials in Anhui Province, with total assets of more than 10 billion yuan, annual sales revenue of more than 7 billion yuan and import and export volume of more than 100 million US dollars. The company's main business is the R & D, production and sales of polyvinyl alcohol (PVA) and its derivatives. The producing areas are distributed in Chaohu, Anhui (Headquarters), Yizhou, Guangxi, chayouhou banner, Inner Mongolia, Jiashan, Zhejiang and other places. The group has an annual production capacity of 350000 tons of polyvinyl alcohol (PVA), 600000 tons of VAC, 120000 tons of refined methyl acetate, 500000 tons of calcium carbide, 40000 tons of high strength and high modulus PVA fiber, 60000 tons of polyester chips, 140000 tons of VAE, 40000 tons of redispersible rubber powder, 40000 tons of PVB resin, 40000 tons of PVB film, 12 million square meters of PVA optical film, 7 million square meters of polarizer and 4 million tons of cement clinker. Among them, the production and sales of PVA and high strength and high modulus PVA fiber have ranked first in the same industry in China for many years; PVB resin and film are at the forefront in China, and PVA optical film is the first in China. In recent years, it has won 3 first prizes of provincial scientific and technological progress; 55 invention patents and 105 utility model patents; Presided over the formulation of 3 national standards and 5 industrial standards. The group has been rated as a national high-tech enterprise, an innovative enterprise in Anhui Province and a key high-tech enterprise in the torch plan.