Daim duab

Biogas cog cov qauv qhia ntawm MoneHHUo Cov Chaw Tsim Tshuaj Hluav Taws Xob thiab Chaw Muag Khoom Tuam Txhab Taw Qhia
   

Ob chav tw gashcripes ECPC hlau sib sau ua ke Aaerobic diges dig
   

H2S tshem tawm cov thev naus laus zis