Qingdao Ludong Gas Co.,Ltd is located in Qingdao-biggest sea port of north China. Benifit from the rapid development of China economy, Ludong gas company also enhanced it;s strength greatly. Now, Ludong gas Company have two branch business, one is cylinder and gas equipments manufacturing and distribute, another is high purity gas export. Company dedicated in the gas industry for over 15 years, and manufacturing the gas products, and gas filling equipments to meet customer requirements, and gained a sound reputation all over the world. but still enslaved to the bad cylinder quality in China, so we invested in gas cylinder manufacturing from 2014 in Liyi industry zoon, 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. In order to meet customer's high quality gas needs, we established good relations with Air products, and Messer.By this way we solved the gas purity problem fundamentally.At present, we provide a range of gas cylinder and gas equipments to suit different customer requirements, our main products including; 1. Seamless steel gas cylinders, covering GB5099, ISO9809 standard and EN1964 standard cylinder for gases like oxygen,argon, helium, nitrogen,CO2 etc. Cylinder working pressure from 150bar to 200bar. 2. Dewar-Cryogenic liquid cyinders capacity from 175L to 500L, working pressure from 1.6Mpa to 3.0Mpa3. High purity gases. Helium, Argon, Acetylene, Hydrogen, Nitrous oxide, EO sterilization gases, Sulfur dioxide, Sulfur hexafluoride etc 4. Gas filling equipment Cryogenic filling pump, Ambient vaporizer, Liquid oxygen/argon/nitrogen/CO2 storage tankWith 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.