Emhlabeni wethu ohamba ngokushesha, lapho intuthuko yezobuchwepheshe ilawula isigqi, imboni ye-HVAC (Ukushisa, Ukungenisa umoya, kanye ne-Air Conditioning) igcina isigqi, ihlezi icindezela imingcele yokuqamba izinto ezintsha. Into eyodwa ebalulekile ku...
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