WanWei Group is engaged in chemical, chemical fiber, new material industries etc,. The comprehensive strength is in the forefront of Chinese PVA industry. WanWei Group has 6 subsidiaries, including Anhui WanWei Updated High-Tech Material Industry Co., Ltd., which is listed on Shanghai Stock Exchange in May, 1997 (Name shorten as "WanWei High-Tech", Stock Code "600063"). WanWei Group is the biggest PVA manufacturer in China. The annual production capacity of PVA is 250,000 tons, with more than 30% domestic shares & more than 70% of Chinese exports for 6 continuous years. With strong technical support, WanWei Group has the first National-Level enterprise technology center in China and more than 80 technology patents. PVB resin is the downstream products of PVA, which is under researched and developed by WanWei Group, with purpose to extend PVA industry chain. The project starts in Jan, 2013 and has been launched into market since 2014, with production capacity of 20,000 tons of Film-Grade PVB resin.