Core contents of the standard: First, unified plate content, clarifying the basic information that must be included on product plates, including product name, model, rated parameters, manufacturer, production date, product number, implementation standard number, etc.; Second, new identification contents, adding energy efficiency grade labels, QR code traceability labels, intelligent function labels, safety warning labels and other contents. The QR code label must contain the full life cycle information of the product; Third, standardized plate format, unifying the font, font size, color and typesetting format of plates to ensure clear and readable identification; Fourth, material and installation requirements, stipulating that the material of plates must be corrosion-resistant, wear-resistant and not easy to fade, and the installation position must be obvious, firm and not easy to damage; Fifth, use and maintenance requirements, clarifying the use and maintenance requirements of product plates, stipulating that plates must be kept clear and complete, must not be altered or damaged, and the replacement of plates must be confirmed by the manufacturer.