1.professional gas manufacturer, 2.best quality,competive price,quick delivery, 3 OEM service available 1.professional manufacturer; ... cylinders in 20' container 4.99.99% purity 5.Best quality,competive price ,OEM servicecan be used as aerosol propellant,medical aerosol ... informations,pls contact Mr Wayne.. 30bl /13.6kg cylinder higher quality refrigerant gas R22