In 2003
Shandong Lede Machinery Co., Ltd was founded, engaging in the production of grooved fittings.

In 2009
Laiyang Kuangda Machinery Co., Ltd was founded. This subsidiary primarily produces grooved fittings and ductile iron pipelines.

In 2012
Shandong Lede Machinery Co., Ltd, invested in a company that carries out the design and production of gate valves, butterfly valves, and check valves.

In 2015
Shandong Lede Valve Co., Ltd. was established covering an area of 190,000 square meters, and producing a variety of valve types. Our products are now UL listed and FM approved.