Upstream

• Suzhou Suzhu Foundry Machinery Manufacture Co., Ltd.
• Jiangyin Sanzhu Intelligent Equipment Co., Ltd.
• Shanghai Xinyan Industrial Equipment Co., Ltd.
• Zhucheng Wantong Foundry Equipment Engineering Co., Ltd.
• Hunan Huazhong-Tiandi Environmental Protection Technology Co., Ltd.
• Shandong Yinlong Intelligent Technology Co., Ltd.
• Changzhou Dingxin Purifying Equipment Technology Co., Ltd.
• Laizhou Mengcheng Machinery Equipment Co., Ltd.
• Yantai Bohong Industry and Trade Co., Ltd.
• Yantai Huasheng logistics Co., Ltd
• Yantai Purui Lifting Machinery Co., Ltd.
• Weifang Foundry Machinery Co., Ltd.
• Luoyang Xingniu Transformer Co., Ltd.
• Weifang Huanyu Environmental Protection Equipment Factory
• Yantai Changming Casting Material Co., Ltd.
• Zhaoyuan Haoxin Trading Co., Ltd.
• Zhaoyuan Shengwei Casting Material Co., Ltd.
• Tongliao Dalin Molding Sand Co., Ltd.
• Shandong Beiyang Iron and Steel Co., Ltd.
• Shandong Golden Power Co., Ltd.
• Longkou Liqiang Waste Material Recycling Co., Ltd.
• Rizhao Tongwang Environmental Engineering Co., Ltd.
• Tibet Boyu Metal Company Limited
• Qingdao Chentuo New Material Co., Ltd.

Downstream

• Laizhou SANLI AUTO Replacement PARTS Co., Ltd.
• Yantai Hongtian Auto Parts Co., Ltd.
• Yantai Mefine Machine Co., Ltd.
• Yantai March International Trade Co., Ltd.