Bi-hlau hnav phaj yog ib hom kev sib xyaw ua ke nrog ob lossis peb yam khoom sib txawv. Lub bimetal coj phaj feem ntau muaj txheej txheej siab hardness chrome dawb hlau uas muab kev hnav zoo ntawm lub ntsej muag hnav thiab cov hlau thaub qab uas muab cov tawv tawv zoo los yog cuam tshuam rau lub phaj.

Sunwill tuaj yeem muab cov khoom siv hlau bi-hlau nyob rau hauv ntau qhov sib txawv thiab tuab kom haum rau qhov tshwj xeeb hnav ntawm cov neeg siv khoom qhov chaw. Thov tuaj rau peb rau kev daws teeb meem Bi-hlau yog tias xav tau.