Polyurethane is a kind of polymer containing -NHCOO-repeating structural unit in the main chain, including rigid polyurethane pla...

What if the steel plate is cleaned with a lot of foam? In fact, this problem is very common. Perhaps the manufacturer who has don...

With the development of human society and the economic take-off, while the construction and development, the ecological environm...

Beijing Juxin Weiye Trading sent a product called frozen oil, which is a colorless transparent liquid with a lot of bleaching oil...