South africa origin chromite foundry sand AFS size china supplier china manufacturer china exporter
We import 44% grade chrome ore from south africa,then manufacturing to 46% grade AFS size chromite foundry sand at china tianjin port or lianyungang port.
Then sell in china and export to wordwide countries.
Quality standard : 46% min cr2o3 1% max sio2
size standard: AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS45-55 AFS50-60 AFS60-70 325MESH 200MESH
