Manufacturers are required to submit the Product Report prior to introduction of the certified product into commerce. CDRH considers delivery of a product to a prospective purchaser or for exhibition at a trade show to be introduction into commerce. CDRH has issued a "Guide for Preparing Product Reports for Lasers and Products Containing Lasers," and a "Reporting Guide for Laser Light Shows and Displays." The appropriate Guide must be used and the report format must follow that of the Guide