| 摘要 |
PROBLEM TO BE SOLVED: To provide a colored blasting material allowing product number, its constitution, particle diameter, hardness, specific gravity, shape, and other functions discriminatable as first glance, and a blended blasting materials comprising plural kinds of such colored blasting materials admixed allowing to visually check their rough mixing ratio. SOLUTION: The colored blasting material is varied in color depending on product number or its constitution, particle diameter, hardness, specific gravity, shape or other functions. The blended blasting materials comprise plural kinds of such colored blasting materials admixed.
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