... Fire retardant B2. Particle size 0.25mm~1.60mm.high foaming speed.Low density of block.Less air used Product ... Applications: Insulation, board stock and so onCharacteristic:Fire retardant B2, uniform size,low density of block,high foaming speed, less air ... Applications: Insulation, board stock and so onCharacteristic:Fire retardant B2, uniform size,low density of block,high foaming speed, less air ...