Changsha Jinduo Machinery Co., Ltd.
Changsha Jinduo Machinery Co., Ltd.
DaliPu Petroleum Specialized Pipe Co., Ltd.

DaliPu Petroleum Specialized Pipe Co., Ltd.

China Metallurgical Science & Technology Equipment Co., Ltd.

China Metallurgical Science & Technology Equipment Co., Ltd.

Baogang Co., Ltd.

Baogang Co., Ltd.

Jiangsu Tianhuai Steel Pipe Co., Ltd.

Jiangsu Tianhuai Steel Pipe Co., Ltd.

Jiangyin Metal Pipe Manufacturing Co., Ltd.

Jiangyin Metal Pipe Manufacturing Co., Ltd.

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