[Class : 1] Industrial Gases; Oxygen For Industrial Purposes; Nitrogen; Argon; Hydrogen.[Class : 5] Oxygen For Medical Purposes.[Class : 11] Air Separation Apparatus.[Class : 35] Online Ordering Services Pertaining To Industrial Gases.[Class : 37] Installation, Maintenance And Repair Of Gas Supply Apparatus.[Class : 39] Transportation And Distribution Of Natural Gas And Liqu...