三年级上册英语人教版视频跟读-东方品质,金鱼kinngyo,光圆若色器

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Glass


Chrome Corundum Bricks (Octagonal Cylinders)

Chromium corundum brick is made of high purity electromolten chromium oxide and alumina powder, adding a small amount of zirconia, sintered at high pressure and high temperature.
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Low Porosity Clay Bricks Octagonal Cylinders

Low porosity clay brick is made of high quality coke gem clinker, sintered mullite, three stone as the main raw materials by sintering at high pressure and high temperature.
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