Luoyang Ruichang Environmental Engineering Co., Ltd. | 100.00% | Luoyang Ruiqieer Petro-chemical Equipment Co., Ltd. | 100.00% | Ruiqieer Petro-chemical Engineering (Shanghai) Co., Ltd. | 100.00% | Ruijing (Jiangsu) Environmental Engineering Co., Ltd. | 100.00% | Shanghai Ruining Han Cold Energy Technology Co., Ltd. | 69.97% | | |
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