... thickness:20mm,40mm,50mm,75mm and 120mm eps foam board:basic material: mgo board +EPS/XPS+mgo board.thickness:20mm,40mm,50mm,75mm ... of sound insulationfireproof: both mgo board and flame retardant-grade EPS/XPS are fire-resistance materials.green and environment protection, ... of Employees:50-100Contact person:helenGoods samples with different colors: eps foam board/xps foam board/ mgo sandwich panel