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si2202%(purity:99.5 Fe:0.2 Al:0.2 Ca:0.02)
si3303%(purity:99.3 Fe:0.3 Al:0.3 Ca:0.03)
si411% (purity:99.3 Fe:0.4 Al:0.1 Ca:0.1)
si421% (purity:99.2 Fe:0.4 Al:0.2 Ca:0.1)
si441% (purity:99.0 Fe:0.4 Al:0.4 Ca:0.1)
si553% (purity:98.5 Fe:0.5 Al:0.5 Ca:0.3)
size is 0-100mm
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