China Petroleum & Chemical Corporation (Sinopec) has commissioned a specialty polyvinyl alcohol (PVA) resin facility with an annual production capacity of 50,000 metric tons per year (m.t./yr) at its subsidiary, Chongqing SVW Chemical Co., Ltd. The new facility increases the site’s total PVA production capacity to 210,000 m.t./yr, making it the world’s largest single-site production base for high-end PVA. The additional capacity will strengthen the supply of specialty materials used in photovoltaics, electronics, optical films, pharmaceuticals and other high-value applications. The new facility uses advanced alcoholysis and precision purification technologies to support the large-scale production of specialty PVA products. A new polymerization process increased production capacity by 40% compared with earlier-generation equipment.