Hirsh Precision Products, Inc. cnc lathes, cnc mills, cnc turning, cnc milling, precision-machined, contract manufacturer, hirsh precision products inc, hirsh precision, hppi Hirsh Precision is a contract manufacturer of precision-machined and assembled components. We attract the attention of industry with our quality program and inventory reduction strategies. Our emphasis is on components that repeat and have stringent cosmetic or dimensional requirements.