What are the key factors shaping China's dichloromethane supply and export logistics?

China's methane chloride capacity stands at approximately 3.1 million tons per year as of 2020, with Shandong province accounting for 40% of national capacity. Key producers include Shandong Jinling (440,000 tons), Luxi Chemical (400,000 tons), and Shandong Dongyue (380,000 tons). Operating rates fluctuate widely—from 50% at Dongying Huatai to full capacity at several plants—creating supply elasticity that directly impacts pricing. For exports, DCM is classified as a Class 6.1 hazardous material (UN 1593, packing group III), requiring specialized logistics. Shipping lines impose strict limits on toxic substances, and securing bookings demands expertise in route-specific carrier acceptance and declaration procedures. DCM is typically packed in galvanized or black iron drums or tank cars, filled to 80% capacity, with nitrogen protection available on request. Export growth has been a stabilizing factor during domestic oversupply, but logistics complexity and carrier restrictions remain bottlenecks for expanding overseas sales.