[Class : 1] Hydrogen; Ammonia; Gas For Industrial Use; Gas In Liquid Form For Industrial Use; Solidified Gases For Industrial Purposes; Chemical Substances, Chemical Materials And Chemical Preparations, And Natural Elements (Terms Too Vague In The Opinion Of The International Bureau – Rule 13 (2) (B) Of The Common Regulations).[Class : 4] Fuel; Biofuels; Electrical Energy; E...