<track id="6iwt9"><strike id="6iwt9"></strike></track>
        Electronic and high precise machine manufacturing industry

        The key part of machine parts coating and solution

        The buyer: Germany * * * ceramic limited liability company

        Recommended products:

        B2 Grade (2N) High alpha phase silicon nitride.

        JSH B2 Grade(2N)The contents of major elements in silicon nitride powder
        ProjectUnitRange
        N%> 38.5
        O%< 1.5
        C%< 0.2
        Fe%< 0.3
        Al%< 0.2
        Ca%< 0.2
        Pppm wt< 200
        Sppm wt< 200
        Clppm wt< 200
        Si-free%< 0.2
        Si3N4(aphar)%> 95
        D50um0.5±0.05
        日韩一级片中文字幕_伊人久久97超碰精品一区二区_婷婷国产综合精品欧美成人_精品人妻aV中文字幕乱码_亚洲精品无码永久免费_男人的天堂无码视频