Perylene-3,4,9,10-tetracarboxylic acid diimides (Perylene biimides, PBIs) ndi gulu la mankhwala osakaniza a mphete onunkhira okhala ndi perylene.Chifukwa cha mawonekedwe ake abwino opaka utoto, kufulumira kopepuka, kuthamanga kwanyengo komanso kukhazikika kwamankhwala, amagwiritsidwa ntchito kwambiri pamakampani opanga zokutira zamagalimoto....
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