Ntsuas PP Board: Poob tsis sib haum, yooj yim rau kev sib tshuam thiab kev ua haujlwm, nrog tshuaj lom neeg lub cev ua haujlwm, tshav kub kub thiab feem cuam tshuam Tsis muaj tshuaj lom neeg, tsis muaj ntxhiab yog ib qho ntawm feem ntau cov yeeb yam hauv tshuab tam sim no nyob rau hauv txoj kab nrog kev tiv thaiv ib puag ncig. Lub ntsiab xim yog xim dawb, micro-xim, lwm yam xim kuj tuaj yeem ua raws li tus neeg yuav tsum tau ua. Daim ntaub ntawv: Acid thiab alkali resistant cov khoom, cov khoom noj khoom haus zoo nkauj, khib nyiab dej, cov pa hauv qhov dej tawm, ntxhua khaub ncaws, cov chav ntxuav, cov khoom siv hluav taws xob thiab lwm cov khoom siv, kuj yog cov khoom siv rau kev tsim cov dej tso dej, cov ntawv txheeb tuab dav siv dav rau kev thwj rau Board, lub rooj txawb chaw txawb, thiab lwm yam.
