Dual membrane gas tank for biogas plant 1.less maintenace 2.easy installation ... low cost with aotu-syste The semi-spherical dual membrane gas tank for biogas plant It adopts the special biogas ... handle with our auto-systemUse waste to produce biogas for generatingSpecifationVolume(m3): 50,80,100,150,200,250,300 ... ,2000,2500,3000 Large volume and easy control. Dual membrane gas tank for biogas plant