Which large biogas engineering companies are there in China?

Large biogas engineering companies need their own intellectual property rights to develop.

1, Xinjiang Biogas Network-Xinjiang Xiyu Pastoral Agricultural Technology Co., Ltd.

2. Qingdao-Qingdao Rentian Environment Co., Ltd.

3. Hangzhou Energy and Environment Engineering Co., Ltd..

4. Sichuan Datang Biogas

5. Fuzhou Beihuan Environmental Protection Technology Development Co., Ltd..