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2805120010 
高纯度钙
High-purity calcium, metal impurity(other than Magnesium)< 1‰, containing less than1/105 by weight of boron |
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2805301510 
颗粒<500μm的铈及其合金
Cerium and its alloys, granularity<500 μm, containing more than 97% by weight of cerium, whether in the form of spheroid, ellipsoid, flakes,atomized or pulverized metallic fuel |