At present, in the market of wall insulation, there are few companies whose fire performance reaches Class B1, and only a handful of companies have achieved Grade A. Most of them are Japanese Mitsubishi, German Aruk State, German Knauf, and other foreign giants. The price deterred most developers. For example, the price of A2 aluminum sheet in Arukhan, Germany, is 500 yuan per square meter, which is 5 to 10 times higher than that of the domestic class B aluminum sheet. Although the price of A2 grade aluminum plates developed by domestic companies is 200 yuan/m2, the prices of the relatively B grade products are also 3 to 5 times higher. Moreover, these innovative products need to be reviewed and inspected by a number of inspection departments of the country. The time and cost of these innovative products also make it impossible for development companies to abandon them. Increasing the rigid regulations for firebreaks also adds new costs. Each additional layer of firebreaks will cost tens to hundreds of dollars. In this regard, Luo Jianhui, chief researcher of Jinmo Building Materials, pointed out that China's external insulation enterprises should strengthen the research of fire prevention basics, speed up technological innovation in the wall insulation industry, develop higher fire protection levels as early as possible, and be able to form industrial scale, It is easy for the market to accept new products and technologies that can save resources and can be reused to respond to industry reshuffling.

Regarding the application of fireproof and thermal insulation, in foreign countries, the general specification requires that the thermal insulation system and thermal insulation material be used for combustion performance and fire endurance test (taking into account the flue gas and toxicity during combustion), and be divided into several grades. The range of applicable systems and materials different. The polyphenylene board external insulation thin plastering system adopted for more than 85% of domestic projects is prohibited in more than 20 states. In the United Kingdom, buildings outside 18m are forbidden to use polystyrene thermal insulation systems. In Germany, buildings above 22m are also prohibited from using polystyrene systems. Therefore, polystyrene insulation systems have rarely been used throughout Europe and the United States.

From the point of view of the European insurance company, it is no longer necessary to insure buildings with polystyrene insulation systems. In China, although the country's JG 149-2003 "Expansion polystyrene board thin plaster external insulation system", must use flame-retardant polystyrene insulation board; in JG 158-2004 "polystyrene powder particles outside the wall The external thermal insulation system makes clear provisions on the fire reactivity of the system (should not be ignited, and the thickness of the test piece does not change by more than 10% after the end of the test). However, the selection of fire insulation barriers for different insulation systems and the selection of the insulation material on the side of the door behind the wall of the system, and the lack of clear regulations on the choice of the insulation system for high-level insulation systems. Although at the end of 2009, the Provisional Regulations on Fire Protection for Civil Building Exterior Insulation Systems and Exterior Wall Decoration jointly issued by the Ministry of Construction and the Ministry of Public Security had further stipulated provisions, there were many violations in the actual projects on the ground. Post-release building fires are still commonplace. Therefore, on March 14, 2011, the Ministry of Public Security issued the "Notice on Further clarification of the requirements relating to the fire supervision and management of exterior thermal insulation materials for civil buildings", which stipulates that external wall insulation materials must be Class A non-combustible materials.