How much do you know about the use of polyurethane adhesives

the research and development of polyurethane adhesives in my country started in the 1960s. after the 1980s, my country’s research on water-based polyurethane has become more active, but it is still in the development stage compared with the level of foreign water-based polyurethane adhesives. in the 1990s, various industries introduced numerous production lines, and a…