... acceptbale to farms SMC Biogas Digester: SMC biogas gas tank: 1, high effect of creating gas, FRP's thermal conductivity is 1.42kj ... ! 2. competitive price , easy accepttable by Farmers. FRP marsh gas tank takes SMC process, cost is low, the price is equal ... to Concrate marsh gas tank 3, life durable. anti oldage, anti corrosion, it can be ...