China's petrochemical buildout is now colliding with its carbon goals. After years of rapid capacity expansion, the government is using the 15th Five Year Plan to tighten approvals, retire older plants, and push production toward higher value chemicals. The shift is already changing global trade flows, with Northeast Asian producers facing the most pressure and US C2 chains holding up on ethane cost advantages. For multinationals, the article argues the key is finding niches where Chinese supply still cannot compete, and using China's capacity to restructure supply networks. The window is narrow, especially in specialty chemicals where Chinese investment is accelerating. Anyone selling commodity petrochemicals should expect margin pressure from Chinese exports for years.
