Long Son Petrochemicals Co., Ltd. (LSP), legally known as Công ty Trách Nhiệm Hữu Hạn Hóa Dầu Long Sơn, is a Vietnamese company operating the country's first integrated petrochemical complex. Located in Long Son commune, Ba Ria-Vung Tau province, the facility spans approximately 460 hectares and represents an investment exceeding $5 billion by its parent, Thailand's SCG Chemicals (SCGC).
The complex features a mixed-feed steam cracker with a capacity of 1.35 million tonnes per year of olefins, including around 950,000 tonnes of ethylene and 400,000 tonnes of propylene. Downstream polyolefin plants produce 1.4 million tonnes annually of high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and polypropylene (PP). Supporting infrastructure includes specialized port facilities, storage tanks, and central utilities.
Commercial operations began in late 2024, following construction that started in 2018. The plant briefly suspended production in late 2024 due to market volatility but resumed in August 2025. Currently, LSP is undertaking the Long Son Petrochemicals Enhancement (LSPE) project to adapt the cracker for increased ethane feedstock usage, aiming to improve efficiency and reduce carbon intensity, with completion expected by 2027.
