How is China's dichloroethane capacity expanding and what does it mean for supply?

How is China's dichloroethane capacity expanding and what does it mean for supply?
China's EDC supply landscape is shifting as major integrated producers push capacity expansion. Wanhua Chemical's Fujian subsidiary is adding 480,000 tonnes per year of EDC through an oxychlorination and purification revamp, a project tied to its MDI integration complex. This reflects a broader trend where EDC is produced captively to feed downstream vinyl chloride and PVC chains rather than sold on the open merchant market. Meanwhile, producers like Shouguang Xinglu are marketing high-purity EDC (99.9%+) to external buyers in pharmaceuticals, agrochemicals and specialty materials. The result is a two-tier market: large-volume captive supply tied to chlor-alkali/PVC economics, and a smaller but growing merchant segment demanding higher purity and regulatory compliance.