By certification 
. Materials: 6061 Aluminium alloy.
. Critical test for every cylinder.
. Safe,lightweight, resist corrosion, perfect treatment for surface interior and exterior to ensure the gas purity and stability.
. Application:Filling compressed pure gas , gas mixtures and air.
The purity gases includes:
Argon,Ethane,Helium,Hydrogen,Neon,Nitrogen,Oxygen ,
Nitrogen monoxide,Nitrous oxide etc.
. Critical test for every cylinder.
. Safe,lightweight, resist corrosion, perfect treatment for surface interior and exterior to ensure the gas purity and stability.
. Application:Filling compressed pure gas , gas mixtures and air.
The purity gases includes:
Argon,Ethane,Helium,Hydrogen,Neon,Nitrogen,Oxygen ,
Nitrogen monoxide,Nitrous oxide etc.