1. Uncoiler: its mission is to serve as the uncoiler base plate according to the frequency conversion operation stable delivery. 2. Sewing machine: the first is used to high quality prepainted color galvanized coil of the street suture to ensure the smooth operation of production. 3. Tension machine: it is a useful tension system. The tension comes from the speed difference of the production line. 4. Uncoiling looper: the effect of uncoiling looper ensures the continuous production of prepainted color galvanized coils because the solid plate belt with looper in the plate belt ensures that the plate belt provides sufficient useful production time for the plate belt. 5. Alkali washes degreasing: it is used to clean the oil and impurities on the substrate, ensure the surface of the board is clean and lay a foundation for the later painting technology. 6. Cleaning: after degreasing, it is necessary to clean the residual liquid retained on the surface of the high quality prepainted color galvanized coil to ensure no residual liquid retained, so as to prepare for the later quality operation of the color steel coil.