Qingdao Ludong Gas Co.,Ltd is located in Qingdao-biggest sea port of north China. Benifit from the rapid development of Chinese economy, Ludong gas company also enhance it;s strength greatly. Now, Ludong gas Company have two branch, one is gas clinder manufacturing and distribute, another is high purity gas manufacturing. With experienced and professional engineer team, and strict quality control managemanet, we have successfully exported our products to over fourty countries and regions all over the world, especially regions from South America, Africa, West Europe, Southeast Asia and the Middle East. We offer a range of gases and gas equipments to suit different customer requirements， our main products include; 1. Dewar-Cryogenic liquid cyinders capacity from 175L to 5000L, working pressure from 1.6Mpa to 3.0Mpa 2. Seamless steel gas cylinders, covering GB5099 standard, ISO9809 standard and EN1964 standard cylinder， working pressure from 150bar to 200bar. water capacity from 4L to 70L. 3. High purity gases. Helium, Argon, Acetylene, Hydrogen, Nitrous oxide, propane, EO sterilizing gases, Sulfur dioxide, Sulfur hexafluoride etc 4. Gas filling equipment Cryogenic filling pump, Ambient vaporizer, Liquid oxygen/argon/nitrogen/CO2 storage tank With superior quality and reasonable price ,we will make unremitting efforts to serve our customers .we are looking forward to cooperating with you for mutual benefits. We have the solution for all your gas needs!