Chenhua won an invention patent that can improve the quality of polyurethane foam and reduce costs

latest news: chenhua announced at noon on july 25 that the company recently obtained an invention patent issued by the state intellectual property office, the name of the invention is a phthalic anhydride diisopropanolamide and its preparation method and phthalic anhydride diisopropanolamide polyurethane foam and preparation method thereof. the announcement shows that the use of…