Gas Cylinder Dealers

im looking for 12.5 kg lpg cylinder to export to nigeria because i have seen very good cylinders from inter gas and koop gas in kuzay kibris, and i intend to export to nigeria, similar quality cylinders for cooking gas with all necessary accessories.
the specification im looking for is:- cylinder size:20, production material: steel material with brass valve, capacity (per/liter): 19/20liters, outside diameter (mm): 205mm, height excluding cap & valve (mm): 820mm, tare weight excluding cap & va