1. Chemical specification:- Copper 78.0% Min.- Cupric Oxide 93.0% Min.- Cuprous Oxide 4.0% max. 2. Annual volume: 20 Metric tons.3. Granulesize. We do not want powder! All go through mesh 24 Nothing goes throught mesh 50The generic spec is : 35 mesh4. Destination: Exothermic weld Show More