South Korea’s petrochemical industry is facing heightened regulatory scrutiny after the Korea Fair Trade Commission (KFTC) launched an investigation into alleged collusion involving major PVC and plasticizer manufacturers, a development that could have implications for regional polymer and additives markets.
According to statements from the KFTC and multiple Korean media reports, the regulator has conducted on-site inspections and is investigating allegations that several leading petrochemical companies coordinated PVC and plasticizer price increases amid supply disruptions linked to geopolitical tensions affecting naphtha markets.
The investigation reportedly involves four major petrochemical companies: LG Chem, Hanwha Solutions, Aekyung Group, and OCI. LG Chem and Hanwha Solutions are significant PVC producers, while all four companies are active in the plasticizer market. At the center of the probe are allegations that the companies may have coordinated pricing actions during a period of uncertainty in global feedstock markets.
South Korean authorities have been closely monitoring price movements across essential industrial and consumer supply chains following disruptions linked to conflict in the Middle East and concerns surrounding naphtha availability. Naphtha remains a critical feedstock for much of Asia’s petrochemical industry, including the production of PVC raw materials and plasticizer intermediates.
The KFTC has not announced any findings and the investigation remains at a preliminary stage. The regulator is currently reviewing documents and conducting supplementary investigations to determine whether any anti-competitive behavior occurred. The case is being watched closely across the PVC value chain because both PVC resin and plasticizers are foundational materials used in numerous downstream applications.
Plasticizers are essential additives that improve the flexibility, processability, and low-temperature performance of flexible PVC products, including wire and cable compounds, flooring, synthetic leather, films, wall coverings, automotive components, and various industrial products.
For Asian PVC markets, the investigation arrives at a sensitive time. Manufacturers throughout the region have been grappling with volatile feedstock costs, fluctuating energy prices, weak construction demand in some markets, and ongoing uncertainty surrounding global supply chains. Industry observers note that any regulatory action involving major PVC and plasticizer suppliers could influence market sentiment, particularly in Northeast Asia, which remains one of the world’s most important production hubs for PVC, additives, and downstream polymer products.
While no conclusions have yet been reached, the probe underscores how competition authorities are increasingly scrutinizing pricing behavior during periods of supply disruption and geopolitical uncertainty. As feedstock markets continue to react to developments in global energy and shipping networks, regulators appear determined to ensure that temporary shortages are not used to justify anti-competitive conduct.