- In 1981
- Lianfa Copper and Aluminum Smelting Plant.
- In 2000
- Nantong Industrial Co., Ltd. is established
- In 2008
- The plant in Area C of Shishan Songxia Industrial Park is put into production.It was renamed as Rijing Metalware Co., Ltd.In the same year, the sales departments are arranged in many places of Pearl River Delta.
- In 2017
- The zinc workshop is put into production. Specialized production of copper, aluminum and zinc is realized.