What factors determine the construction temperature of polyurethane spray materials when they are used on external walls? The construction work of polyurethane materials is not instantaneous. After certain external factors meet the requirements, it can be sprayed smoothly. Next, Hightop Machinery wi

During the polyurethane foaming process, the foam has shrinkage, crispness, too soft, heartburn, cracking, smoke and other problems. How to analyze the causes.During the polyurethane foaming process, affected by the construction conditions, foaming equipment, construction technology and ambient temp