Dual membrane biogas equipment 1.less maintenace 2.easy installation 3.volume ... with aotu-system The semi-spherical dual membrane biogas equipment for biogas plant It adopts the special biogas membrane material ... handle with our auto-systemUse waste to produce biogas for generatingSpecifationVolume(m3): 50,80,100,150,200,250,300 ... ,1000,1200,2000,2500,3000 Dual membrane biogas equipment for biogas plant