Npaum Li Cas GS Tsis Siv Tus Nqi Bollards?

Npaum Li Cas GS Tsis Siv Tus Nqi Bollards?

GS tsis siv neeg bollards muab tus nqi siv tau zoo, tiv thaiv kev tiv thaiv mus sij hawm ntev, lawv cov nqi sib txawv raws li ntau yam, xws li cov khoom siv, hom (poob qis piv rau ib txwm tsis siv neeg bollards), lub tebchaws, tsim qauv thiab ua tiav. Tsis tas li, koj tuaj yeem cia siab tias yuav them nyiaj ntau dua rau kev cai ua bollards, lossis rau kev sib tsoo-ntsuas bollards uas ua raws li cov qauv ntsuas. Kev paub, tus neeg muag khoom muaj npe xws li GS Tsis Siv Neeg yuav pab koj tshawb xyuas koj cov kev xaiv thiab xaiv txoj cai bollards rau koj cov kev xav tau thiab pob nyiaj siv.