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Qingdao Kaijie Heavy Industry Machinery Co., Ltd.
Liaoning Hanzheng Environmental Protection Equipment Engineering Co., Ltd.
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Qingdao Kexin New Energy Technology Co.,Ltd
Qingdao Olympia Heat Energy Equipment Co., Ltd.
Liaoyang Hongji Machinery Co., Ltd.
CHONGQING ZANYO ELECTROMECHANICAL AND MACHINERY CO., LTD.
Guangxi Huihuang Langjie Environmental & Tech Co., Ltd.
Shenzhen Lianxin Testing Equipment Co., Ltd.
Shandong Better Environmental Protection Technology Co., Ltd.