"a powerful greenhouse gas emitted during the production of aluminum"@en-us . "114979132"^^ . . . "a powerful greenhouse gas emitted during the production of aluminum"@en-us . . . . "0"^^ . . . . . . "perfluorocarbon"@en-us . "perfluorocarbon"^^ . . "14979132-n"^^ . . . . "PFC"@en-us . . "0"^^ . "114128455"@en-us .