o 관련규격 및 자료 - Alliance for the polyurethanes industry, “Fire safety guidelines for use of rigid polyurethane and polyisocyanurate foam insulation in building construction”, USA, 2014. - Spray polyurethane foam alliance, “Spray polyurethane foam systems for cold storage facilities operating between -40 and + 10 ”, USA, 2014 - American Chemical Council, "Working with Polyurethane Foam Products; .....