Bi-hlau coj tuav yog ib pab pawg ntawm cov khoom tiv thaiv kev tiv thaiv uas ua los ntawm bimetallic thev naus laus zis nrog chrome dawb hlau hnav lub ntsej muag thiab me me hlau thaub qab. Nws yog dav siv los tiv thaiv cov cheeb tsam tshwj xeeb ntawm excavator thoob, loaders, hoppers, crusher feeders thiab lwm yam khoom siv hnyav.

Sunwill muaj peev xwm muab cov chocky tuav hauv ntau qhov ntau thiab tsawg lossis kev cai ua ntau thiab tsawg raws li cov neeg siv khoom tshwj xeeb.

Thov hu rau peb kom paub meej ntxiv yog tias xav tau.