I-Hanging Heptafluoropropane System uhlelo oluyingqayizivele lokucindezela umlilo olwenzelwe ukuvikela izindawo ezibucayi lapho umlilo wendabuko osuselwa emanzini izindlela zingase zingasebenzi. Lolu hlelo lusebenzisa i-heptafluoropropane (HFP), igesi engenambala nephunga elicima ngempumelelo imililo ngamakhemikhali nangomzimba. izindlela. I-HFP ihlukaniswa ngaphansi kwama-halocarbon agents futhi iyasetshenziswa ikakhululi