China is doubling down on mega chemical plants to secure the “industrial gold” needed for its green technology and to scale the coal-based production of chemicals whose global supply is stalled by conflict in the Middle East. On March 20, construction began on the world’s largest coal-to-ethylene glycol project in Xinjiang’s Turpan prefecture, which is expected to produce 2.4 million tonnes per year, according to state news agency Xinhua. China’s first 100,000-tonne/year solution process-based...