An information system for industrial equipment includes processing circuitry that controls processing apparatuses that each execute a predetermined process with respect to at least one workpiece, respectively collects, from the processing apparatuses, processing information sets that are respectively related to processing steps executed by the processing apparatuses until one corresponding product is manufactured from the at least one workpiece, and associates the processing information sets by assigning to the processing information sets a link identifier that permits a linkage between respective steps of the processing steps related to the one corresponding product.