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Qingdao Kaijie Heavy Industry Machinery Co., Ltd.
Guangxi Huihuang Langjie Environmental & Tech Co., Ltd.
Qingdao Loobo Environmental Protection Technology Co., Ltd.
CHONGQING ZANYO ELECTROMECHANICAL AND MACHINERY CO., LTD.
Shandong Better Environmental Protection Technology Co., Ltd.
Shenzhen Lianxin Testing Equipment Co., Ltd.
Liaoyang Hongji Machinery Co., Ltd.
Qingdao Guangneng Rubbers & Plastics Chemical Co., Ltd.
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Liaoning Hanzheng Environmental Protection Equipment Engineering Co., Ltd.