Phenolic foam is a kind of nonflammabe material. When subjected to fire, it will die out immediately once leave fire. It won't melt and has no dropping object in a fire situation, therefore it does not aggravate the fire expanding. Because of its nonflammable characteristics, it is very  suitable to be used in heat insulation in petroleum, chemical industry pipes and epuipment. It is also widly used in the insulation of central of central conditioner in hotels, and hospitals and other-rise buildings, etc.