Rock wool sandwich panel Better in fire resistance and heat insulation , Sound insulation Incombustibility: Grade A. Durable Thickness: 50mm--150mm .....
Galvanized c section steel is get through antiseptic processing . it resist oxidation .it is widly used for industry steel workshop/warehouse/building...
Welded H-beam due to its anti-bending, the construction is simple and low cost, light weight structure etc, Raw material: Q235B or Q345B Technique: .....