Lub tshuab nqus dej yog siv hauv cov tshuab ntxuav tais diav, thiab siv tshwj xeeb los ua tus neeg sawv cev yaug hauv theem kawg ntawm lub tshuab ntxuav tais diav. Nws tuaj yeem txo qhov nro ntawm npoo ntawm tableware thiab dej. Txhawb kev ziab kom qhuav ntawm cov tais diav ntim khoom tsis tas tawm cov dej ua kua. Cov khoom no muaj kev nyab xeeb siv, tsim nyog rau txhua yam ntawm tableware thiab yuav tsis ua rau muaj kev puas tsuaj rau cov khoom siv thiab cov tais diav lossis cov tshuab ntxuav tais diav. Siv lub tshuab hluav taws xob tag nrho tsis siv neeg, qhov siab ntawm qhov kev txheem dej yaug txheem yog 0.01% mus rau 0.1%, thiab qhov dej kub yog li 80 ° C thiab 90 ° C. Ntau hom tshuab ntxuav tais diav xav tau ntau qhov sib txawv. Kev ntub dej zoo, ua kom qhuav sai uas tsis tas tawm ntawm cov dej noo. Lub tableware tom qab siv meej dua thiab ci dua. Txo cov tableware tawg thiab tiv thaiv kom tsis txhob muaj kab mob. Muaj cov ua npuas ncauj txo tus neeg sawv cev, uas tuaj yeem tshem tawm ua npuas dej sai sai thiab tshem tawm cov khoom noj tsis huv.
Tus tod yog tshuab ziab khaub ncaws. Lub tshuab ziab khaub ncaws yog cov khoom pabcuam tseem ceeb hauv kev lag luam txheej. Nws txoj haujlwm yog txhawm rau nrawm oxidation, polymerization thiab kom qhuav ntawm cov xim pleev xim kom ua tiav lub hom phiaj ntawm ziab kom qhuav. Cov tshuaj ntxuav tes ua kua qaub ua kom qhuav xws li cobalt, manganese, txhuas, zinc, thiab calcium muaj ntau yam, qee qhov tsaus ntuj xim, qee qhov kim, thiab qee yam lom. Kev tsim cov khoom siv lub tshuab nqus dej tsawg dua tau daws tau cov teeb meem saum toj saud, tab sis tsuas yog tuaj yeem hloov tau ib nrab los hloov cov nqi kim cobalt qhuav. Kev txhim kho ntawm cov tshuab ziab khaub ncaws tshiab uas tuaj yeem hloov tau cov cobalt txhua lub sijhawm yog qhov kev ntshaw sai sai ntawm kev ua lag luam coatings.