The characteristic of Bulaopao color steel sandwich panel is "non-combustible". Its general fireproof principle is: abandoning the molecular modification of original materials such as EPS or the method of adding flame retardants, and introducing a new fireproof concept. Organic molecules drive inorganic molecules to move towards the edges during thermal expansion, forming a honeycomb-like isolation compartment, so that each large organic molecule particle forms a relatively independent fireproof unit, thereby effectively blocking heat conduction and flame propagation. Among them, the Zhenjin board (PROPOR Bulaopao) is quite special. Its basic fireproof principle is: adopting the "particle fireproof isolation membrane" technology, using copolymerization modification to give EPS monomer particles the same characteristics as fireproof substances, and applying micro-phase composite technology to form a fireproof isolation membrane on the surface of each organic particle, making each particle a relatively independent organic particle fireproof unit. When encountering flames, it forms a continuous honeycomb structure for heat insulation and blocking, preventing flame propagation and penetration, and stopping combustion. Tests show that its fire resistance rating can reach A2 level.

Secondly, Bulaopao color steel panel material is lighter than traditional polystyrene boards. Lightweight materials do not add extra burden to the building envelope, reducing the possibility of leakage caused by excessive structural load.

Moreover, Bulaopao panel material has low thermal conductivity. Taking Bulaopao as an example, it is only 0.036 W/m·K, which is an improvement compared to the 0.042 W/m·K of traditional polystyrene boards, offering good thermal insulation performance.

In comparison, Bulaopao color steel sandwich insulation panels can further reduce energy consumption and pollutant emissions during the production process, thus providing certain advantages in energy conservation and environmental protection, which is also the development trend of thermal insulation materials. In summary, Zhenjin insulation boards not only meet the requirements for external wall insulation with high fire resistance ratings but also possess significant characteristics in energy conservation and environmental protection. Furthermore, the construction process of Bulaopao color steel sandwich panel materials is similar to that of traditional polystyrene boards, with simple operation and mature experience, improving cost-effectiveness.