Enamelled hlau yog cov khoom siv tseem ceeb ntawm lub cev muaj zog, cov khoom siv hluav taws xob thiab cov khoom siv hauv tsev.Tshwj xeeb tshaj yog nyob rau hauv xyoo tas los no, kev lag luam hluav taws xob tau ua tiav thiab kev loj hlob sai, thiab kev loj hlob sai ntawm cov khoom siv hauv tsev tau coj qhov chaw dav rau ...
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