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        The functional ceramic industry

        The main raw material solution

        The buyer: * * American holding company

        Recommended products:

        B1 Grade (3N) Ultrafine silicon nitride powder.

        JSH B1 Grade (3N) content of the main elements of silicon nitride
        Project Unit Range
        N % > 39
        O % < 1.0
        C % < 0.2
        Fe ppm wt < 400
        Al ppm wt < 200
        Ca ppm wt < 150
        P ppm wt < 50
        S ppm wt < 50
        Cl ppm wt < 50
        Si-free % < 0.1
        Si3N4(aphar) % > 93
        D50 um 0.7±0.05
        内地级A艳片高清免费播放,国产无码在线看,高潮影院,人人射人人
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