FDA-HENGXIN flexitank specificationsizevalve sizestructurecertificatestop/top16-24CBM2' & 3'4PE+1PPEC,FDA,ISO9000,ISO22000,ETCtop/bottom16-24CBM2' & 3'4PE+1PPEC,FDA,ISO9000,ISO22000,ETCbottom/bottom16-24CBM2' & 3'4PE+1PPEC,FDA,ISO9000,ISO22000,ETC Advantage: . Low cost,green . Clean and Green, No risk of contamination . Can carry 40% or more cargo than drum and 50%or more than bottles . Quick loading compared with drums and IBCs and No return needed . Reduce labor cost