Txawm hais tias lub iav kev ruaj ntseg daim ntawv nyias muaj kev tiv thaiv, tab sis kuj tuaj yeem kos cov tshooj los ntawm chav tshwj xeeb hauv kev txheeb xyuas kev txheeb xyuas. 2008, Ministry of Public Security tshaj tawm txoj haujlwm "Ministry of Public Security Tub Ceev Xwm Tub Ceev Xwm Tub Ceev Xwm" lub rooj tsav tsheb, yuav tsum muaj nyob hauv lub tsheb qub 3 hli thickness tempered iav ntxiv rau kev ua yeeb yaj kiab, Qhov kev xeem ntawv yog 2260 grams hlau pob ntawm 4 meters qhov siab dawb caij nplooj zeeg 30 x 30 centimeter thaj tsam ntawm 3 hli thickness film iav yuav tsum tsis txhob khiav dhau, qhov no yog qhov sib npaug ntawm kev cuam tshuam ntawm tus neeg laus tuav cov cuab yeej ntaus, mus cuag lub hom phiaj no , cov ntsiab lus yooj yim kom tau raws li lub neej txhua hnub kom tiv thaiv kev ua txhaum cai, txo cov tsheb sib tsoo thiab lwm yam kev xav tau. Kev lag luam yeeb yam tam sim no tsuas yog ib hom nrog qhov kev tsim nyog.
Xws li FAW Volkswagen, SAIC-GM, Dongfeng Peugeot thiab lwm cov lag luam caj dab, xws li National Tub Tsheb Sentinel Hoobkas, tag nrho los ntawm kev koom tes nrog lub hom phiaj, ua tiav cov ntaub ntawv pov thawj. Tuav