Exhibit: sand belt, sand paper and abrasive product, diamond sand wheel, Pitch cutting, Black lead cloth, etc.

展品：砂带、纸及及其异型产品，石墨布、脂、瓷砂轮、脂切割片、刚石砂轮等。

youdao

Exhibit: sand belt, sand paper and abrasive product, diamond sand wheel, Pitch cutting, Black lead cloth, etc.

展品：砂带、纸及及其异型产品，石墨布、脂、瓷砂轮、脂切割片、刚石砂轮等。

youdao