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Zirconia Foam Filters are used to filter various steel castings and large iron castings, high-temperature master alloys and aviation castings, magnetic materials, copper-magnesium alloy continuous casting, and non-ferrous metal alloy low-pressure casting fields.
link:https://www.sefunm.com/ceramic-filter/ceramic-foam-filter/zirconia-foam-filters.html
Zirconia Foam Filters