Doingcom is the only factory in the world that can continuously produce terpene fragrant chemicals using fix-bed catalytic technology. Three core technology, --- Fix-bed Catalytic Technology, High Selective Hydrogenation Technology, High Efficient Hydrolysis Technology, has made the cost and efficiency of manufacture in Doingcom keep dominant position among all competitors. Based on the high selective hydrogenation technology and other chiral technology, we can also make chiral compounds with lower cost to service perfumery and pharmacy better.