Stiffness: As core material and two layers of steel wool into a cohesive whole Caigangyanmian board company, to work together Caigangyanmian composite panels, plus roof-pressure waves from the surface, the overall stiffness far better than rock wool clip pressure plate (glass cotton) live composite sheet. Sandwich through the connecting members and purlins fixed, greatly improving the overall stiffness of the roof Caigangyanmian board, strengthen the overall performance of the roof. Selection wool sandwich panels, purlin distance can be larger, it can save purlin dosage of 1/3 to 2/3. Short installation period: rock wool sandwich panel, because the field no secondary processing Caigangyanmian plate sandwich panel plant, not only to keep the surroundings clean and tidy, does not affect the normal running of other processes, and can greatly shorten the installation cycle sheet rockwool sandwich daily average of 600 to 800 square meters area of ??installation. Anti-scratch protection: rock wool sandwich panel production, can be attached to the surface of a polyethylene adhesive protective film to prevent transportation and installation process steel surface coating being scratched or worn.