white corundum

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My product!

dcaisj @dcaisj (41) • China 6 Mar 09

I work in a factory!It products the white corundum,Mg-Al spinel,calcined alumina and so on!Its name is Zhengzhou Yufa abrasives Co. Ltd. ,and I introduce: Yufa Group,founged in 1983,is entitled as The Advanced Export-oriend...