TOCOM is a copper plumbing business owned by the Golden Dragon Group. Golden Dragon Precision Copper Tube Group Co.，Ltd(abbreviated as Golden Dragon Group) is a mixed-ownership enterprise controlled by Chongqing Wanzhou Economic Development Company. It is also an internationally renowned leader in the field of precision copper tubes. Golden Dragon Group introduced Finnish seamless copper tube production technology in 1987 and German production equipment in 1994 After several years of exploration and mastering foreign technology, it has been improved and finally formed its own, internationally leading core copper tube production technology. In 2016, the “ R&D and Industrialization of Copper Tube High-efficiency Short-Process Technology Equipment” project of Golden Dragon Group won the only second prize of National Science and Technology Progress Award in the industry. Since 2001, Golden Dragon has embarked on a glorious development journey, establishing (or acquiring and reorganizing)15 branches in Shandong Henan, Jiangsu, Shanghai,Guangdong,Chongqing,Mexico,the United States and other places at home and abroad. Now it has become one of the largest multinational corporations in the world in the production capacity of precision copper pipe. In terms of comprehensive strength, in 2017,Golden Dragon Group ranked 224th among China’s top 500 manufacturing companies and 386th among China’s top 500 private enterprises; in 2018,it ranked 225th among China’s top 500 private enterprises and China’s top 500 private enterprises in manufacturing. 131 people.In terms of social contribution, as of the end of2018,the company has produced and sold 5.25 million tons of various types of precision copper pipes, achieved sales revenue of 350 billion yuan, exported 6 billion Us. dollars in foreign exchange, and paid 3.5 billion taxes. The company has more than 7,500employees..