PU bụ mbiri nke Polyurethane, na aha Chinese bụ Polyurethane.
Ihe mejupụtara akwa akwa akwa bụ nkwado (teepu mpempe akwụkwọ), pad absorption na akwụkwọ iche, kewara n'ụdị iri dịka nha dị iche iche. Ngwaahịa kwesịrị ịdị ọcha.
Band-enyemaka bụ teepu ogologo jikọtara ya na gauze ọgwụ n'etiti, nke a na-etinye na ọnya ahụ iji chebe ọnya ahụ, kwụsị nwa oge na-agba ọbara, na-eguzogide mmeghari nje bacteria ma gbochie ọnya ahụ ka ọ ghara imebi ọzọ.
A na-eji ngwaahịa ahụike eme ihe na-adịghị akwa ákwà, 70% mmanya ọgwụ.