With galvanized sheet as raw material, to do the uncoiling/leveling—NC feeding—auto stamping—roll forming—cut to length—auto unloading. Lift sheets to uncoiler with forklift or crane, and leveling. Then servo feeder feeding material for stamping, and then into roll forming machine to do continuously roll forming, air cylinder locate to shearing, and then next sheet will push product out, whole production auto continuously production.