Haldor Topsoe A/S announced that Huineng, a large-scale SNG (Substitute Natural Gas) plant, went successfully on-stream near the city of Ordos, located in Inner Mongolia in the northern part of China. Topsoe has designed the methanation section of this plant, which is the company’s second large-scale coal-based industrial SNG reference to begin operations in China following last years’ opening of Qinghua, the world’s largest SNG plant located in the Xinjiang region.