Khalase ke amorphous inorganic non-metallic material.Ka kakaretso e entsoe ka mefuta e fapaneng ea liminerale tse sa sebetseng (tse kang lehlabathe la quartz, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, joalo-joalo) e le thepa e ka sehloohong e tala, le lisebelisoa tse nyenyane tse thusang. lia eketsoa....
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