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    VI(y)wS200411a(chn)oFĥ΢5f仯W(xu)ɷ֣SiO2%/>99%;Al2O3%/<0.50%;Fe2O3%/0.02-0.06%׶ȴ90ͻȴ1700ȡֵܹ˾PꖿhVI(y)޹˾a(chn)ɰ60fڴ˻A(ch)ϰVI(y)wSRҪa(chn)Ʒ飲Ŀ/Ŀ/Ŀ/Ŀ/Ŀ΢ۣVڣͻϡɸ(j)͑

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