... . & HACCP cert. Delivery in time Competitive price High quality Main manufacturer in china. Fire retardant B2. Particle size 0.25mm ... 45~65 Applications: Insulation, board stock and so onCharacteristic:Fire retardant B2, uniform size,low density of block,high foaming ... 45~65 Applications: Insulation, board stock and so onCharacteristic:Fire retardant B2, uniform size,low density of block,high foaming ...