Special water-based polyurethane is a new environmentally friendly polyurethane coating with excellent weather resistance, chemical resistance, and outstanding mechanical properties. It can be used for surface coating of various materials such as metal, plastic, wood, etc., with good adhesion and abrasion resistance, effectively protecting the coated surface from corrosion and oxidation. Special water-based polyurethane is also solvent-free, non-toxic, odorless, and does not release toxic gases, meeting environmental requirements. It is widely used in the automotive, construction, marine, furniture, and other industries.