Muaj ntau cov ntaub ntawv siv rau kev ua cov ntawv hluav taws uas tau txais los lees paub SDI 118-2001 8 daim ntawv lo cim rau npe. Cov no suav nrog cov hlau, tooj dag, txhuas, thiab tsis yog xim hlau. Cov ntawv hlau txuas nrog willed los ntawm vuam, riveting, pop riveting lossis nrog tsav screws. Cov ntawv cim uas tsis yog xim hlau yog txawm tuag-slit-slit-slit lossis tamper ntawv pov thawj nrog ib qho kev nplaum rov qab. Thaum tau thov, yog tias ib qho kev sim ua kom tshem tawm daim ntawv lo nws yuav los kua nplaum sib nrug qhia tau tampering. Cov ntawv cim npe yog cov cim cim cim uas yog lo ncaj qha rau hauv cov steel, thiab tseem siv tau rau cov chaw sau npe. Hluav taws cov ntawv sau rau ntawm lub qhov rooj thiab cov thav ntawv tsis tau npaj kom muaj lub nplaim hluav taws los ua yeeb yam txhaum tom qab qhov tseeb. Daim ntawv lo yog muaj qhia tias kev qhib yog kev tiv thaiv yog tiv thaiv los ntawm kev tsim kho kom zoo thiab siv cov steel qhov rooj thiab thav duab. Ua raws li cov hluav taws yuav tsum tau ua ua ntej hluav taws tshwm sim.
