Shenzhen SDG-Tonsun Industrial Co., Ltd. established in 1987 is a state-of-the ISO9001 certified manufacturing company and one of the 100 biggest industrial enterprises in Shenzhen China.

Covering 26,000 M2 Tonsun boasts to have over 30 assembly production lines, 36 plastic injection machines, 100 meters hanging convey line for lacquer spray, 120 meters hanging convey line for powder spray and 30 sets of winding machines for transformer ......

Tonsun focuses on in-doors using lighting manufacture complying with TUV, VDE, UL, CSA, NEMIKO..etr., meanwhile it produces transformer and energy saving lamp to provide its world wide customers.