Long Sơn petrochemical complex to begin commercial operation in Q3 stockbot 0 9 04.08 16:34 https://vietnamnews.vn/bizhub/1653495/long-son-petrochemical-complex-t… + 0 https://vietnamnews.vn/rss/bizhub.rss + 1 With a total investment of about US$5.4 billion, the complex has a designed capacity of 1.4 million tonnes of olefin resin per year, aimed at producing a variety of petroleum products.