Qingdao Baigong Industrial and Trading Co., Ltd. is one of the leading enterprises specialized in developing, engineering, manufacturing and exporting gas cylinder products and industrial gases in China and our products were approved by Qingdao Foreign Economical & Trading Commission. We have two invested companies and 5 manufacturing plants which makes us could supply wide range of gas cylinders, such as seamless steel gas cylinders, aluminum alloy gas cylinders, acetylene cylinders, CNG cylinders (Type 1 & Type 2 & Type 3), LPG cylinders, Liquid Chlorine Cylinders and Liquid Ammonia Cylinders, etc. All the Seamless Steel Gas Cylinders we supply can be produced mainly according to GB5099 standard, ISO9809 standard, En1964 Standard and DOT3AA standard, the Aluminum Gas Cylinders are produced according to GB11640 standard and the Acetylene Gas Cylinders are produced according to GB11638 standard. Our gas cylinders are widely applied to many industries such as chemical, medical, pesticide, metallurgy, paper industry, rubber, plastic, textile, printing and dyeing, food, water purification, light industry, electricity, fire-fighting, and automatics. - See more at: http://www.chinagascylinder.com/#sthash.7Cil9UyY.dpuf