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&lt;/script&gt;</html><description>Polymeric materials include plastics, rubber, fibers, films, adhesives and coatings. Because they have many potential properties superior to those of traditional structural materials, they are increasingly used in the field of military and civilian products. However, in the process, storage and use, due to light, heat, oxygen, water, high-energy radiation, chemical and biological erosion and [&hellip;]</description><thumbnail_url>https://longchangchemical.com/wp-content/uploads/2024/02/logo-jpeg.jpg</thumbnail_url><thumbnail_width>1000</thumbnail_width><thumbnail_height>1000</thumbnail_height></oembed>
