... degassing valves are available on most sizes. Bag style: Plastic Stand up bag(bottom guseet bag) Features: 1.Full range of advanced machine ... heat cutting machines, slitting machines, interim sealing machine, professional bag-making machine etc. 2.Green material, Non benzene and ketone ... Outer: PET, BOPP, Nylon, MET PET, MATT BOPP, MATT PET, PVDC, COATED PET etc. Middle: PET, MET PET, etc. Inner: ...