Ngokuhamba kweminyaka, izakhiwo zensimbi ziye zazuza ukuthandwa ngenxa yokuqina kwazo, ukonga kwezindleko, nokuguquguquka.Kodwa-ke, isici esibalulekile ekwakhiweni kwensimbi okuvame ukunganakwa ukuthungatha okushisayo.Ngaphandle kwe-insulation efanele, lezi zakhiwo zi ...
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