Praxair Offshore Services Ltd. acquired Scotland-based Dominion Technology Gases Investment Ltd., supplier of diving, welding, industrial, laboratory and calibration gases, and associated equipment to the offshore oil and gas industry. Through its acquisition, Praxair will be able to provide products and services to an expanded base of high-value customers in the global market. Dominion is expected to generate sales in 2013 of about US$55 million.