Hengnan Shenglong Chemical Co., Ltd. Was founded on September 8, 1999, located in Hengyang high and new development zone of Hunan. The company nears to Xiangjiang River, Beijing-Zhuhai and Hengyang-Kunming Expressway, Beijing-Guangzhou and Hunan and Guangxi Railway with convenient transportation. The main products are Barium carbonate, Sodium bicarbonate, Thiourea, Thiourea dioxide and Manganese sulfate. We hold "good faith first, quality first, customer , price superior" as objective for many years and are devoted to development with cutomers, creating magnificent achievement.