Txhua feem ntawm cov plated ntu tuaj yeem plated nrog zinc, txawm tias nyob rau hauv recesses, ntse cov ces kaum thiab cov chaw zais zais tau muaj kev tiv thaiv tag nrho.
5.4. Muaj kev tiv thaiv zoo
Oct 21, 2025
Xa kev nug
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