JC/T 504-2007 "Petroleum Asphalt Waterproofing Membrane with Aluminum Foil Surface" stipulates the classification, requirements, test methods, inspection rules, and Encasement, storage and transportation requirements of waterproofing membranes with glass fiber felt as the base, surface coated with petroleum asphalt, upper layer covered with embossed aluminum foil, and lower layer using fine sand or polyethylene (PE) film as isolation treatment. This standard is applicable to the waterproofing construction of roofs and basements in construction projects to ensure product mass and construction safety. The products are divided into two labels of No. 30 and No. 40, and the width of the coil is unified to 1,000 mm. The marking requirements are carried out in the order of product name and standard number.