Txoj moo
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Cov txheej txheem txha caj qaum, koj puas paub
Cov txha hniav laus, tseem hu ua "Caj ciabne", txha hniav laus yog qee qhov kev sib tsoo sib tsoo, txhaws, melting, thiab tom qab ntawd tsim cov xim nplua nuj. Enamel yog kev sib xyaw ntawm silica xuab zeb, txiv qaub, borax thiab sodium carbonate. Nws yog cov xim pleev xim, carved thiab hlawv ntawm ntau pua qhov kev kub siab ua ntej nws ...Nyeem ntxiv
