... the application of pillow soft tank in the water storage of fracturing liquid, considerable economic benefit ... light weight, non-toxic, odorless, no pollution to water, hydrolysis resistance, age resistance, long life service. ... frame, which are mainly used now, TPU water hose is light in weight, only 1-2 kilo ... complex flange is not necessary;it can be coiled down flatly,also the storage size is much ...