Tongchuan Coal Inspection Station, Shaanxi Energy Quality Supervision and Inspection Institute. Tongchuan City, a prefecture-level city under the jurisdiction of Shaanxi Province, is located in the middle of Shaanxi Province, and Tongchuan Coal Inspection Station of Shaanxi Energy Quality Supervision and Inspection Institute is the most authoritative, located in the south of the intersection of Yiyuan Road and Jixian Dike in Wangyi District. The test of coal is to test and analyze the fixed carbon, sulfur, phosphorus, calorific value, colloid index, adhesion index, total moisture, analytical base moisture, ash and volatile matter of coal.