Khoom siv: Nruam Siv cov hmoov txhuas superfine ua los ntawm peb lub tuam txhab, nws yog tsim los ntawm kev siv vuam tsis siv neeg thiab laser txiav tshuab. Nws yog siv los txiav cov vuas luaj ceramic, cov vuas glazed lossis polished glazed vuas. Nws tuaj yeem ua tau ntau daim sib xyaw ua ke, muaj qhov zoo ntawm kev ua haujlwm ntev thiab kev ua haujlwm ntev.