Lub tswv yim tsim qauv tseem ceeb ntawm cov khoom siv hluav taws xob yog los xyuas kom meej qhov sib npaug ntawm rau lub hauv paus ntsiab lus: kev ntseeg siab, kev nyab xeeb, kev lag luam, kev ruaj ntseg, ruaj khov, thiab kev phooj ywg ib puag ncig.
Txoj Cai Kev Ntseeg: Tus qauv tsim yuav tsum lav qhov kev ua haujlwm ruaj khov ntawm cov khoom raws li ntau yam kev ua haujlwm, tsis txhob tawg, deformation, lossis hnav. High-cov ntaub ntawv ua tau zoo uas yog corrosion-tiv taus thiab tiv thaiv- kev laus raug xaiv los txhim kho lub sijhawm ntev-.
Txoj Cai Kev Nyab Xeeb: Tiv thaiv kev pheej hmoo ntawm hluav taws xob poob siab, hluav taws kub, thiab ntog, ua haujlwm tiv thaiv- hluav taws xob tsim qauv tsim, nplaim hluav taws- cov khoom siv hluav taws xob, thiab cov txheej txheem hluav taws xob tsim nyog los xyuas kom muaj kev nyab xeeb ntawm cov neeg siv khoom thiab cov khoom siv.
Economy Principple: Txo cov nqi thaum ua tau raws li qhov yuav tsum tau ua. Qhov no ua tiav los ntawm kev ua kom yooj yim, txhim kho kev xaiv cov khoom siv, thiab siv cov qauv tsim los txhim kho kev tsim khoom thiab txo cov nqi tsim khoom.
Txoj Cai Tswj Xyuas Kev Nyab Xeeb: Ua kom yooj yim tshem tawm thiab hloov pauv, nrog ua ntej - tsim kev kuaj xyuas qhov tsis raug cuam tshuam los txhim kho kev saib xyuas thiab txo qis sijhawm.
Lub hauv paus ntsiab lus ntawm Durability: Extending lub neej kev pab cuam ntawm cov khoom los ntawm kev txhim kho lub zog ntawm cov qauv, xaiv hnav- cov ntaub ntawv tiv taus, thiab kev tswj cov txheej txheem nruj.
Kev tiv thaiv ib puag ncig: Tsom ntsoov rau kev txuag hluav taws xob thiab kev txo qis, txo cov pa phem, thiab xav txog cov khoom siv rov ua dua tshiab kom txo tau qhov cuam tshuam rau ib puag ncig.