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2023 / 01
1. what is sprayed rigid polyurethane? sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by mixin…
![DMAEE CAS1704-62-7 2-[2-(Dimethylamino)ethoxy]ethanol](http://dmaee.cn/wp-content/uploads/2022/11/cropped-logo1.jpg){kind=logo}
1. what is sprayed rigid polyurethane? sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by mixin…
