1. <p id="he14u"><del id="he14u"><xmp id="he14u"></xmp></del></p>

        <pre id="he14u"><del id="he14u"><xmp id="he14u"></xmp></del></pre>
        <p id="he14u"></p>

        sell 3,3',4,4'-biphenyltetracarboxylic dianhydride

        3,3',4,4'-biphenyltetracarboxylic dianhydride be used for the preparation of a polyimide material.

        3,3',4,4'-biphenyltetracarboxylic dianhydride

        Molecular Formula:C16H6O6

        Molecular Weight:294.22

        CAS:2420-87-3

        EINECS:219-342-9

        Melting point:299-305 oC

        Purity:99.9%

        3,3',4,4'-biphenyltetracarboxylic dianhydride be used for the preparation of a polyimide material.


        动漫美女扒下内裤的照片十八禁