Shandong Henderson Group Co., Ltd.

Angang Group Yongtong Ductile Cast lron Pipe Co., Ltd.

Wuxi Hongda Heavy Forging Co., Ltd.

Jiangyin Zhongnan Heavy Industry Co., Ltd.

Jiangyin Huaxi Flanges & Pipe Fittings Co., Ltd.

Iraeta Energy Equipment Co., Ltd.

Guangdong Dexin Mold & Steel Industrial Co., Ltd.