Abstract: A method of data update, for determining a material qualification status of at least one supplier according to a plurality of smelters of a material used by the at least one supplier, the method comprising obtaining a qualified smelter list of the material from a predetermined website; and comparing the qualified smelter list of the material with a material list of the at least one supplier corresponding to the material to determine the material qualification status of the at least one supplier, so as to perform a violation warning operation; wherein the material list of each supplier of the material list of the at least one supplier denotes the plurality of smelters of the material used by the at least one supplier in system codes; wherein the qualified smelter list denotes a plurality of qualified smelters of the material in international codes.