ADTO GROUP, founded in 1998, is one of the largest steel tube & scaffolding R&D, manufacturing and trading group company in China. The company has taken the construction of many major projects in China mainland under cooperating with China Construction, MCC China and Hunan Construction Engineering Group. After 15 years' development, the group now has 8 subsidiaries and 4 manufacturing plants. As one of the subsidiaries of ADTO, Changsha Xiangjia now has 6 ERW steel tube production lines, 2 hot dipped galvanizing lines and 4 hollow section production lines. It's annual capacity reaches 100, 000 matric tons.