... components PU glue through forming machinesSpecifications:(1)Core Material: Rock Wool, EPS, PU; Surface Materials: MgO boards or ... . adding storey to small steel structure industrid factory building worehouse,suburbon temporary office,residentid quarters,school,hospital,etc ... effects.5) In common use heat preservation materials are rock-wool, polystyrene,polyurethane, all with lower thermal conductivity ...