Rock wool sandwich panels offer excellent fire resistance, making them quite useful in our construction field. So, what is the source of their fire-resistant capabilities? Let's take a brief look at it. Rock wool sandwich panels primarily use rock wool as the core material, which itself has strong flame-retardant properties and is non-combustible, thus providing robust fire resistance. To enhance the fire resistance of rock wool sandwich panels, we also apply an organic chemical coating on the surface and then zinc plate it for smoothness, which further improves their fire-resistant qualities. As a combination of rock wool and sandwich panels, both of which are non-combustible, they inherently possess excellent fire resistance.