高温煅烧棕刚玉抛光喷砂磨料除锈去毛刺 36目金刚砂免费拿样

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High-temperature burning of brown jade, polishing of sand grinders, rusting of hair and thorns, 36

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高温煅烧棕刚玉 抛光喷砂磨料 除锈去毛刺 36目金刚砂 免费拿样