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Member Company
- Shaanxi Etrol Technologies Co.,Ltd.
- Shaanxi Tian’an Technology & Engineering Co.,Ltd.
- Zhejiang Etrol Technologies Co.,Ltd.
- Hangzhou Etrol Environmental Technology Co.,Ltd.
- Karamay Etrol Technologies Co.,Ltd.
- Xinjiang Tian’an Engineering Co.,Ltd.
- Zhengzhou Etrol Smart Granary Technology Co.,Ltd.
- Zhengzhou Xinsheng Electronic Technology Co.,Ltd.
- Zhejiang Qiushijiahe Technologies Co.,Ltd.
- Beijing Geoshine Oilfield Services Co.,Ltd.
- Beijing Petrodamo Technologies Engineering Co.,Ltd.
- Hangzhou Qingniao Science And Technologies Co.,Ltd.
