Fiber ea khalase e hlahile lilemong tsa bo-1930.Ke mofuta oa inorganic non-metallic material e hlahisoang ke pyrophyllite, lehlabathe la quartz, limestone, dolomite, calcite, brucite, boric acid, soda ash le lisebelisoa tse ling tsa lik'hemik'hale tse tala.E na le boima bo bobebe, matla a phahameng, ho hanyetsa mocheso o phahameng le o tlase, corrosio ...
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