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 Biphenyl-4,4'-dicarboxylic acid;4,4'-Biphenyldicarboxylic acid

        Biphenyl-4,4'-dicarboxylic acid as a important intermediate, Biphenyl-4,4'-dicarboxylic acid can be used for pharmaceuticals, organic polymer monomer, supramolecular materials and liquid crystal products.

        动漫美女扒下内裤的照片十八禁