We are currently looking for the supply of industrial gas containers.. The product we are looking to purchase is kind of second hand industrial gas tanks,O2 generation plant and cylinders,. If you sale second hand gas equipments as belows,could you please provide us an offer with technical datasheet ? Products; - 10 ,20,26,40 and 50 liters of capacity of compressed Gas Cylinders - Mixed and Transport Cyrogenic Gas Tanks