Cov khoom siv tseem ceeb ntawm cov khoom siv hluav taws xob ( factory hired) lub Hoobkas raws li nram no :
Tshuab xauv tshuab, nqus ntxuag tshuab, beam ntxuag tshuab, txiav phaj tshuab, dabtsi yog khoov tshuab, punching tshuab, tsis siv neeg welding neeg hlau, vuam tshuab, hmoov txheej nchuav kab, ntws kho nchuav kab, muaj cov khoom siv ntawm lub hoobkas.
Qhov zoo ntawm kev sib tw nws txawv heev nrog cov khoom siv. Ntawm cov hoob kawm, qhov zoo ntawm lub rhaub yog tseem muaj feem xyuam rau cov ntaub ntawv raw thiab hlau, uas ua rau ib qho loj sib txawv nyob rau hauv tus nqi ntawm lub khib s ntawm lub lag luam. Nyob rau hauv kev xaiv ntawm racking Hoobkas, tshwj xeeb tshaj yog hnyav ua hauj lwm racks , los yog xaiv ib lub zog ntawm lub racking Hoobkas, yog li ntawd qhov zoo yog guaranteed
