Amandongomane kwiingono zoxinzelelo oluphezulu lweGesi eQinisiweyo

*Slayida ingono yombhobho woxinzelelo oluphezulu ukwenzela irhasi ecinezelweyo kwelinye lala mandongomane ukudibanisa umbhobho kwindawo yokungena yesilawuli soxinzelelo. Zikwabizwa ngokuba yiCGA (Compressed Gas Association) amantongomane kunye namantongomane angenayo.