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Kev kho rau laser txiav tshuab
1. Hloov cov dej hauv cov dej txias ib hlis ib zaug. Nws yog qhov zoo tshaj rau hloov mus rau cov dej distilled. Yog tias tsis muaj dej distilled, cov dej ntshiab tuaj yeem siv los hloov. 2. Tshem tawm lub lens tiv thaiv thiab xyuas nws txhua hnub ua ntej tig nws. Yog tias nws qias neeg, nws yuav tsum tau so. Thaum txiav cov S...Nyeem ntxiv
