Sebaka seo thepa ea tšepe e bolokiloeng ho sona, ka hare le ka ntle ho ntlo ea polokelo, e lokela ho hloeka le ho omella, hole le lithupelo tsa fektheri tse hlahisang likhase tse kotsi le lerōle, 'me li sa tsoakane le li-acids, alkalis, letsoai, likhase, phofo le lintho tse ling.Polokelo e lokela ho ba c...
Bala haholoanyane