1. Ucoceko, ungeyotyhefu, akukho ngcoliso, akukho microorganisms, kunye nesiqinisekiso somgangatho we-fluid 2. Ukumelana nokubola kweekhemikhali, umhlaba kunye nezilwanyana zaselwandle, ukuchasana nokuchithwa kwe-cathodic 3. Inkqubo yofakelo ikhulile, ilungele, kwaye iyakhawuleza, kwaye umdibaniso uyafana negalv eqhelekileyo...
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