Dej poob pub rauj zeb yog lub tshuab aiming ntawm crushing cov ntaub ntawv los ntawm kev sib tsoo ntawm high-ceev rauj thiab cov ntaub ntawv. Nws yog tsim rau milling raw cov ntaub ntawv xws li husks, pobkws, nplej, taum, txiv laum huab xeeb, thiab lwm yam. Qhov tshwj xeeb dej-poob tsim ntawm pub rauj zeb tuaj yeem ua kom muaj qhov chaw loj dua rau kev sib tsoo chamber thiab txhim kho kev ua haujlwm ntawm 40%. Nws yog ib qho tsim nyog nyob rau hauv loj thiab nruab nrab qhov loj pub ua cov nroj tsuag thiab factories.