model hf-3550 type low-temperature unsealing one-component hdi isocyanate curing agent applications various types of polyurethane type one-component baking type coatings, inks, adhesives. main characteristics -110℃ low temperature unsealing, high temperature fast curing; -good compatibility with various types of resins to improve water resistance, flexibility, chemical resistance and adhesion of paint film; -high storage stability at...