Profile: Dorner Mfg. Corp. produces conveyors. Our products include modular plastic belt conveyors, heavy duty belt conveyors, angular belt conveyors, low profile stainless steel belt conveyors and curve & straight plastic belt conveyors. Our modular plastic belt conveyor includes MPB curve conveyors and 3200 series MPB. Our 3200 series MPB conveyor is capable of wide widths and very high loads.