We are locate in jiangsu province near Shanghai port and special ingas cylinders& tank, CNG cylinders, Acetylene cylinders,Filling gas system and all kinds of Industrial gases(Helium, Argon,CO2, N2...). As one of big supplier of Gases industrial in China,we can supply the ISO9809 empty seamless gas cylinders/GB11638Acetylene gas cylinders/CNG gas cylinders/Store tank/PortableLiquid Cylinders for all the oversea clients. Thanks for visit ourcompany's imformation you need any details about my products,please contact with me.