Heyuan, Guangdong - Quartz Sand Casting Yuansheng2010-2-16
Foundry sand: SiO2 content of 95-99.5% Fe2O3 content of 0.06-0.02%, particle size 30 Head Head -50, -70 Head 50 Head 70 Head Head -100, -120 head 70 head (which can...
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