The Fourth China (Taiyuan) International Energy Industry Expo was recently held in Taiyuan, capital of coal-rich Shanxi Province, to discuss the latest trends in China's energy industries. Some 30,000 people, including representatives from 137 companies fi'om 18 countries and regions, attended the Expo, which featured demonstrations of industry breakthroughs in the fields of coal and coalbed gas, water, electricity, natural gas and new energies. Running under a theme of "green energy and transformation", the three-day event also allowed Shanxi,