1. Lub zog muaj zog, nyob rau hauv tib lub cev nyhav, pultruded fiberglass beam profile muaj lub zog siab dua cov hlau, tshwj xeeb tshaj yog lub zog ntev;
2. Cov nplaim hluavtaws rov qab, nplaim nplaim taws tuaj yeem muab ntxiv los ua kom cov nplaim hluav taws kub rov qab sai raws li cov khoom xav tau;
3. Lub teeb qhov hnyav, qhov sib txawv ntawm cov khoom siv yog 1.9g / m3, uas yog kwv yees li ib feem peb ntawm cov hlau;
4. Hluav taws xob rwb thaiv tsev, tsis muaj kev coj zoo, siab dielectric muaj peev xwm;
5. Los tiv thaiv kev xeb, tiv taus xeb los ntawm ntau cov dej thiab tshuaj, tsis muaj kev kho saum npoo xws li xim;
6. Hluav taws xob rwb thaiv tsev, tsis muaj kev coj zoo, siab dielectric muaj peev xwm;
7. Lub neej los tiv thaiv kev laus lub neej ntev, thiab kev pab cuam lub neej tuaj yeem ncav ntau dua 20 xyoo;
8. Kev txij nkawm-pub dawb tom qab thiab kev pabcuam lub neej ntev
