Ka whakaratohia e matou he ngongo ngongo, he tira ngongo paihere ranei mo te tuku H2 ki te teihana hinu H2. He pai ake te kounga o a maatau waka, he pai ki nga paerewa me nga ture o te USDOT, ISO, KGS, GB, TPED, aha atu, ko te pehanga mahi kua hangaia 200bar, 250bar ranei kia rite ki te hiahia a te kiritaki. Ko te ngongo ngongo hauwai i hangaia hei whakatutuki i te utu nui me te taumahatanga.