Thawj kauj ruam, cov hlau tsis muaj steel dov rau hauv cov hlau kauj, welded, thiab tom qab ntawd txiav crimping thiab lwm yam txheej txheem, thawj zaug ua; cov kauj ruam thib ob, tom qab ntxuav ultrasonic, ntxuav ultrasonic, sab hauv thiab sab hauv lub gallbladder compacted ua ke, lub qhov ncauj thiab hauv qab vuam, tsim ib qho chaw kaw; cov kauj ruam thib peb, lub tshuab nqus tsev, tsuas yog nruab nrab ntawm lub zais zis sab hauv thiab sab nrauv los tsim ib lub tshuab nqus tsev, lub khob rwb thaiv tsev muaj kev ua haujlwm rwb thaiv tsev; theem plaub, electrolysis tom qab ntau txheej txheej polishing; qib thib rau, kev kho deg, sib dhos muaj ntau qhov sib txuas, silk screen, laser thiab lwm yam txheej txheem; cov kauj ruam kawg, kev sib dhos, cov tsos ntawm ntim, laser thiab lwm yam txheej txheem; cov kauj ruam kawg, sib dhos, sib dhos muaj ntau qhov txuas, silk screen, laser thiab lwm yam txheej txheem. Electrolysis tom qab ntau txheej txheej polishing; qib tsib, xim xim; qib thib rau, kev kho saum npoo, silk screen, laser thiab lwm yam txheej txheem; cov kauj ruam kawg ntawm kev sib dhos, kev sib dhos muaj ntau qhov sib txuas, txhua feem ntawm kev teeb tsa, kev ntim khoom zoo, kev tshuaj xyuas zoo, ntim thiab ntim txheej txheem.
