I-Spiral Ventilation Umbhobho
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JULI®I-Spiral Ventilation Ducting
I JULI®Umbhobho wokungenisa umoya ojikelezayo usetyenziswa rhoqo kuxinzelelo olulungileyo nolubi kumhlaba ophantsi, kwaye unokuvuthela umoya ovela ngaphandle kwaye ukhuphe umoya ngaphakathi.
