Txhawm rau kom zoo nkauj nyob rau hauv lub khob cawv txiv hmab tam sim no, cov tuam txhab lag luam yuav tuaj nrog ntau yam kev kho kom zoo nkauj los txhim kho cov tsos ntawm lub khob cawv txiv hmab, xws li roasting, spraying, electroplating, silk screen, thiab lwm yam. Qhov tseeb tau ua pov thawj tias zoo. Cov txiaj ntsig tau ua tiav, ib yam li cov paj roasting Lub raj mis cawv tau hlub los ntawm cov neeg siv khoom, tab sis cov txheej txheem tsim khoom ntawm lub khob cij lub raj mis yog qhov nyuaj, thiab muaj cov hauv qab no:
1. Rau kev tsim cov qauv iav wine fwj, cov hmoov lead-chrome thiab cov hmoov lead-free chrome yuav tsum tau qhib nyias, tsis nyob rau hauv tib lub tsev rau khoom, kom tsis txhob cuam tshuam cov hmoov lead-free chrome wine fwj.
2. Thaum cov neeg ua haujlwm ua haujlwm, luam ntawv inks thiab tshuab yuav tsum muaj kev ywj pheej thiab ua tiav kev cob qhia, uas yuav tsum huv thiab tsis muaj cov khib nyiab.
3. Tom qab lub khob cawv txiv hmab yog decaled, cov hmoov txhuas thiab chromium-muaj thiab tsis muaj chromium yuav tsum tau muab cais thaum lawv qhuav lawm.
4. Thaum nkag mus rau hauv lub qhov cub ci, nws tsis raug tso cai los sib tov cov roasting, yog li ntawd cov cua kub-kub convection yuav paug cov khoom uas muaj txhuas thiab chromium rau cov khoom uas tsis muaj txhuas thiab chromium qauv.