خصائص وتحليل تطبيق راتنجات البولي يوريثين. انثقاب فى السنوات الاخيرة, the development of waterborne polyurethane has become the focus of the industry. By using water as dispersion medium, waterborne polyurethane avoids the use of organic solvents, and has the advantages of pollution-free, آمنة وموثوقة, good mechanical ...