Versions ntawm lub davhlau ya nyob twg thaiv nrog ntsia hlau txuas tshuab rau rail mounting, yooj yim ua hauj lwm ua ke nrog kev sib cais ntawm txhua yam thiab hluav taws xob functions ua rail - mounted ntsia hlau davhlau ya nyob twg blocks ib tug universal txheem daws.
1. Tag nrho cov khoom nyob rau hauv lub davhlau ya nyob twg
2. Ntau cov cim xaiv los ntawm
