- Henan Dajia Mining Machinery Company
- Address:500 meters west,Rizhao Road and Industrial Road, Mazhai Industrial Zhengzhou, Hena
- Huasen Gas Grou
- Address:Tianzhu Industrial Park Shunyi District, Beijing, China Beijing, Beijing
- Tangshan Keyuan Environmental Protection Tehnology & Equipment Co., Ltd
- Address:west of north flyover, Tangshan,Hebei,P.R.China Tangshan Hebei 063020 China
- Huasen Gas Group
- Address:Tianzhu Industrial Park Shunyi District, Beijing, China Beijing Beijing China
- Chengu Hantu Machinery Equipment Co.,LTD
- Address:Longquanyi District Chengdu Sichuan 610000 China
- Qinhuangdao Zhongqing Metallurgical Valve Co.,Ltd.
- Address:: Gepo Village Lulong county Qinhuangdao City Hebei Qinghuangdao Hebei 066004 China
- Zibo Zichai New Energy Co.,Ltd
- Address:zhangdian district Zibo Shandong 255088 China
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