They are mainly used in filling the superior CO2 & Mixture Gas for beverage and remain the ideal choice for 
commercial dispensing beers, lagers, ciders, stouts and carbonated soft drinks, as well as for use in "kegerators" 
and other home-dispensing devices. It offers the following advantages: 
1.High interior cleanliness and odourlessness after special treatment. 
2.Highly corrosion-resistant interior and exterior-ideal for wet gases. 
3.Lightweight-up to 30 percent lighter than comparable steel cylinders. 
4.Thick, consistent walls resist damage. 
5.Consistent weight.