Grade classification Reflective film grades are: diamond grade, high strength grade, engineering grade, economic grade. Diamond Grade Reflective Film The function of this series of reflective film belongs to the first and second grade reflective film of JT-T279-1995 scale issued by Ministry of Communications of the People's Republic of China. Its reflective principle is different from that of engineering grade and high strength grade reflective film. The principle of bead reflection, but the latest technology using microcrystalline cube reflection. Generally divided into pressure-sensitive and thermal type two. At present, engineering-grade reflective films still have certain applications in areas with small traffic and low-velocity vehicles. Compared with the traditional engineering grade and high-strength grade reflective film, the diamond grade reflective film made of wear-resisting high-hardness polycarbonate material and microcrystal cube technology not only doubles in its reflection function, but also has a wide angle performance. progress. Uses: Guide signs; prohibition signs, warning signs and indication signs, and signs used in ordinary advertising. The brightness of the diamond grade reflective film is more than six times that of the engineering grade and three times that of the high grade. Operating temperature: General requirements at 18 °C ~ 28 °C. The lower layer of the microcrystalline cube body is sealed to form an air layer, so that the incident light forms an internal total reflection, so that an optimally reflective effect can be achieved without using a metal reflective layer. This material has been successfully used to make traffic signs since the early 1950s. Lifespan: Generally 3 to 7 years, depending on the manufacturer. Uses: Guide signs; prohibition signs, warning signs and indication signs, and signs used in ordinary advertising. Using the same kind of ink, various types of patterns can be made using screen printing technology. Some manufacturers only provide a seven-year retroreflective film. After seven years, the brightness retention value is at least 50% of the initial brightness value. Using the same kind of ink, various types of patterns can be made using screen printing technology. Combined floor: aluminum plate, steel plate. The high-strength grade reflective film is used for traffic signs on general roads, ie the usual expressways, first class, second class, third class, fourth class roads and temporary use signs. Some manufacturers provide reflective films for 3 years, 5 years, and 7 years. Even if the signs are in large angles and in bright areas, the high-strength reflective film makes the signs clearly visible and effectively predicts the dangerous situation on the road ahead of the driver. Engineering-grade reflective film is used for traffic signs on general roads, that is, the usual primary, secondary, tertiary, and fourth-grade roads and signs for temporary use. Generally divided into pressure-sensitive and thermal type two. Lifetime: Generally 10 years, under normal use conditions, this series of reflective film has a brightness retention value of at least 80% of the initial brightness value after 10 years. Used for traffic signs on high-grade highways and urban roads. Operating temperature: General requirements at 18 °C ~ 28 °C. Combined floor: aluminum plate, steel plate. The material has been successfully used to make traffic signs. Lifetime: Generally 10 years. Under normal use conditions, this series of reflective film has a brightness retention value of at least 50% of the initial brightness value after 10 years. . Operating temperature: General requirements at 18 °C ~ 28 °C. High-strength grade reflective film The function of this series of reflective film belongs to the Ministry of Communications of the People's Republic of China JT-T279-1995 standard third grade reflective film, high-strength grade reflective film is a durable sealed reflective film, at least more than engineering grade reflective film Three times brighter. Engineering grade reflective film The function of this series of reflective film belongs to the fourth grade reflective film of JT-T279-1995 standard issued by the Ministry of Communications of the People's Republic of China. It is a durable sealed reflective film. Combined floor: aluminum plate, steel plate. Uses: Guide signs; prohibition signs, warning signs and indication signs, and signs used in ordinary advertising. Under normal use conditions, the brightness retention value after 10 years is at least 50% of the initial brightness value. Using the same kind of ink, various kinds of patterns can be made using screen printing technology. Each crystallite cube of the diamond grade retroreflective film is arranged to have more than 930 microcubes in one square centimeter of material.