We also can supply active silica powder of every specification, Sediment time not lower than 45 minutes.
我公司对各种规格的硅微粉均可提供活性硅微粉，沉降时间不少于45分钟。
In this paper, the active silica powders were prepared from the silica powders that were subject to surface chemical modification in dry process.
本文介绍了硅微粉的主要性能和用途、硅微粉原料的加工和提纯技术以及硅微粉的生产技术。
As a kind of information material, spherical fused silica is one of the most active areas.
作为信息材料，球形石英一种是最活跃的地区之一。
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