Storage of materials: hm-635c has water absorption. Please use it once or as soon as possible after opening. If there are any remaining storage barrels, please close them tightly and prevent moisture.The raw materials should be stored in a dry place, away from the source of fire.The recommended storage temperature is 20-30℃;If there is solidification phenomenon in winter, only heating to 25℃ above can be used normally, will not affect the quality of the product. Product features 1, good toughness, high average molecular weight, can improve the toughness of hard foam products, so that the foam resistance to high and low temperature cracking resistance. 2, good adhesion, low molecular substance content is very little, not brittle, and steel plate, plastic, wall and other substrate has a good adhesion, so that the foam and the substrate dehulling abnormal situation reduced. 3, the bubble hole is delicate, and isocyanate reaction, the generation of products bubble hole is delicate, with lower thermal conductivity, heat preservation ability to improve. 4, good compatibility, and blowing agent, additives and other configuration and combination material system, there will be no turbidity, stratification, deterioration and other phenomena. 5, high degree of functionality, theoretical functionality 4.5-5.0, foam products have a higher strength, foam shrinkage resistance is strong.