<nobr id="3ttst"><source id="3ttst"></source></nobr>
<li id="3ttst"></li>
    1. <style id="3ttst"><code id="3ttst"></code></style>

      <table id="3ttst"></table>
      国产欧美另类第一页,日韩人妻少妇一区二区三区 ,顶级欧美色妇xxxxx,性色AV无码免费一区二区三区,亚洲欧美一区二区三区在线,亚洲人成伊人成综合网无码,亚洲国产精品久久久久久,成av人片一区二区久久

      北京Iron powder

      • name: 北京Iron powder
      • Classification: Iron powder
      • Corporate name: Dada Alloy Co., Ltd
      • Time: 19/07/28
      • Click count:  
      Product details

      Iron dust is a collection of iron particles with a size less than 1mm. Color: Black. It is the main raw material for powder metallurgy. According to particle size, it is commonly divided into five levels: coarse powder, medium powder, fine powder, ultrafine powder, and ultrafine powder. Particle size ranges from 150 to 500 μ The iron powder composed of particles within the range of m is coarse powder, with a particle size ranging from 44 to 150 μ M is a medium powder, 10-44 μ M is fine powder, 0.5-10 μ M is fine powder, less than 0.5 μ M is ultrafine powder.

      Due to its good activity and easy moisture absorption and oxidation, reduced iron powder is often used in food desoxidant . Common specification parameters:

      Fe 96% min; Harmful elements meet food grade, with a particle size of 80 or 100 mesh



      點擊次數(shù):   更新時間:19/07/28 10:49:07   【打印此頁】   【關閉
      主站蜘蛛池模板: 午夜欧美理论2019理论| 亚洲一区二区三区激情视频| 99riav精品免费视频观看| 5d肉蒲团之性战奶水| 欧美人与zozoxxxx另类| 亚洲亚洲人成无码网WWW| 中文字幕久精品免费视频蜜桃视频 | 日韩AV无码AV免费AV不卡| 国内精品久久人妻无码不卡| 无码精品国产VA在线观看DVD| 91精品国产免费人成网站| 欧美在线视频a| 亚洲不卡av不卡一区二区| 久久semm亚洲国产| 欧美一区二区三区国产精品| 亚洲国产精品电影人久久| 亚洲日韩一区二区三区| 国产精品一区二区在线观看| 秋霞无码久久一区二区| 日产精品一区二区免费| 日韩欧无码一区二区三区免费不卡| 日日碰狠狠躁久久躁96avv| 抽搐一进一出试看60秒体验区| 国产对白老熟女正在播放| 加勒比色老久久综合网| 亚洲精品综合第一国产综合| 国产精品午夜福利资源| 国产亚洲精品久久久久四川人| 综合网五月| 久久亚洲精品综合国产仙踪林| 亚洲精品一区二区动漫| 国产欧美日韩久久久久| 最新国产AV最新国产在钱| 亚洲AV日韩AV一区谷露| 白嫩少妇无套内谢视频| 亚洲国产成人久久综合碰碰| 日韩欧美亚洲国产成人综合| 狠狠亚洲超碰狼人久久老人| 奇米网777色在线精品| 无码AV岛国片在线播放| 人妻少妇啊灬啊灬用力…啊快|