ʯӢɰ?quartz?sands?ɰ?high?purity?grade:sio2:99.95%min-99.8%min?fe2o3:3ppm?max-30ppm?max,?size:2-200?mesh?ƹɰdeliberated?grade:sio2:99.8%min-99.0%min?fe2o3:50ppm?max-0.03%?max,?size:2-325?mesh?
2011-07-04 0ʯӢһN|ͻW|ʮַ(wn)ĵVa(chn)YԴʯӢĻWɷ֞SiO2wϵV͜ʯӢa-ʯӢʯӢVзֲ^VһVNVxʯӢ߀ߜʯӢb-ʯӢʯӢKʯ?Ҫa(chn)ʯӢɰ(ַQɰ)ԭϣ?ҲʯӢͻϺ͟ƹFԭϡʯӢɰrҪɷݞʯӢܶȞÿƽ2.65ˣĪӲȞ7?Yfwϵ^ɰɫɫ
2011-07-04 0ʯӢһN|ͻW|ʮַ(wn)ĵVa(chn)YԴʯӢĻWɷ֞SiO2wϵV͜ʯӢa-ʯӢʯӢVзֲ^VһVNVxʯӢ߀ߜʯӢb-ʯӢʯӢKʯ?Ҫa(chn)ʯӢɰ(ַQɰ)ԭϣ?ҲʯӢͻϺ͟ƹFԭϡʯӢɰrҪɷݞʯӢܶȞÿƽ2.65ˣĪӲȞ7?Yfwϵ^ɰɫɫ
2011-07-04 0