女同免费毛片在线播放,亚洲AVAV天堂AV在线网毛片,一个人高清在线观看WWW免费,亚洲精品无码久久久久久

For grinding wheel & stone
Your present position:Home > Application > For grinding wheel & stone

Pink fused alumina

Pink fused alumina
Details:
Pink Fused Alumina

Pink fused alumina is produced by fusion of Bayer-alumina with additive Chromium oxide in an electric arc furnace at over 2100 centigrade. The Chromium oxide impact a bit higher toughness than White fused alumina. Due to different Chromium content, we separately provide 3 types of Light pink, Pink and Ruby. Along with chromium oxide content increased, the color become more and more dark and the grains become more and more tough.

Pink Fused Alumina1111111111111111.jpg

中文字幕乱伦视频| 少妇性l交大片| 护士奶头又白又大又好摸视频 | 欧洲精品久久久av无码电影| 国产在线看片免费人成视频| 少妇又紧又色又爽又刺激视频|