Dear Sir or Madam I hope you fell well and everything goes OK for you and your colleagues , I am an Iranian merchant and manufacturer and deal in gas and electronic components and deal with many Chinese suppliers and place regular and large orders for them , I should be please if you give me some information of the quality of your cylinders and giving the exact technical specifications of your cylinders too and to quote your best and the most competitive price for oxygen cylinder with the following specifications : 1) pressure capacity : 150-200 2) volume : 40 3) material : steel if your price and quality meets the approval of my customers , I can place regular and large orders for you Kindly send some photos of cylinders ? Best regards Abbas Safaee ( Mr ) TEHRAN-IRAN Email : abbassafaee@yahoo.co.uk