China has begun construction on the air separation unit for a 2.4 Mtpa high-quality fiber-grade coal-to-monoethylene glycol (MEG) project in Turpan, Xinjiang, built by China Chemical Engineering Third Construction Co. for Hengyi Energy Technology (Turpan), marking the full launch of the core supporting facility for the world's largest single-train coal-to-MEG project under construction. The air separation unit, with a designed capacity of 120,000 standard cubic meters, is one of the largest single-train units in China.