Cov khoom tseem ceeb ntawm cov tshuab hluav taws xob
(1) Piv nrog cov laj kab dav dav, nws muaj qhov kub zoo ua haujlwm thiab tiv thaiv txias, cov khoom siv zoo heev nyob rau hauv qhov dav ntawm qhov kub, thiab nws yog qhov tsim nyog siv rau kev ua cov txheej txheem;
(2) zoo corrosion tsis kam, tsawg dua kev cuam tshuam rau ib puag ncig, thiab zoo durability;
(3) Piv nrog cov ntaub ntawv hlau, nws yooj yim dua rau cov txheej txheem, muaj cov khoom lag luam siab dua, thiab tuaj yeem ua cov txheej txheem yooj yim thiab txuag nqi;
(4) Cov qauv zoo ruaj khov thiab hluav taws xob rwb thaiv tsev;
(5) lub teeb yuag, lub zog tshwj xeeb, thiab koj txhuam kev sib txhuam txo thiab hnav tsis kam.