fire-proof, heat insulation,easy for installation fire-proof, heat insulation,easy for installation1. double sizes steel sheets,thickness of steel sheet can offer:0.326mm;0.376mm,0.426mm,0.476mm,0.526mm,0.576mm;2.rockwool sandwich thickness:50mm,75mm,100mm,120mm,125mm,150mm;3.Density of rockwool: 50~80kg/cbm,80~120kg/cbm;4. Length: below 11.85meter /pcs;5. MOQ:1180meter;(1*40HQ container) 1060# ...