... for generating electricity,cooking,heating,etc. Easy to install I.The characterization of biogas digesterThe biogas digester ... complete oxygen-free room for anaerobic microorganisms to do fermentation, which in return increases the biogas output ratio.II. ... 80°C,100h)%Longitudinal≤8Transverse9Cold-resistance(-45°C)In good condition10Resistance to penetration (steel pricker:100g,H:1m)unpierced11Ageing ...