外观白色半透明颗粒半透明颗粒，其中不得夹带金属屑和砂粒，含有可见的黑点粒白色分数不超过1目测。
1 white translucent translucent particles particles, which may be entrained metal chips and sand, containing visible black white grain percentage more than 1 visual inspection.
外观白色半透明颗粒半透明颗粒，其中不得夹带金属屑和砂粒，含有可见的黑点粒白色分数不超过1目测。
1 white translucent translucent particles particles, which may be entrained metal chips and sand, containing visible black white grain percentage more than 1 visual inspection.
应用推荐