... PCO28mm Size to be custom-made High resistance carbonand water vapor permeability 1.name:PET bottle preform, is a polyester ... we also have other color.3.usage:widely used in drinking water, edible oil, carbonic acid beverage bottling, hot canned beverage ... so on blowing bottles4.advantage:high resistance carbon, oxygen and water vapor permeability, excellent resistance to impact resistant, chemicals sex ...