Air Liquide W.A. Pty Ltd was established in 1965 to service the Western Australian market with industrial, scientific and medical gases, gas equipment and welding products, and now holds a sizeable and growing percentage of the WA and Northern Territory markets. Air Liquide WA Pty Ltd (ALWA) is a partnership company with Wesfarmers Limited and Air Liquide Australia Ltd (a member of the largest industrial gas group in the world).