Cov khoom no siv silica gel raws li cov khoom siv raw, uas muaj kev nyab xeeb, ib puag ncig tus phooj ywg thiab tsis muaj ntxhiab tsw ntxhiab.Nws tuaj yeem lim cov tshuaj yej zoo, khaws cov khoom muaj txiaj ntsig hauv cov tshuaj yej kua zaub, tswj cov saj du thiab ci xim, thiab txhim khu kev lom zem ntawm cov tshuaj yej tasting.
