Purpose of copper ore: to recover/extract the copper and to make into copper wire.
If copper ore has silver and gold content, Zhong will saperate the copper, silver and gold.
Copper to make copper wire, silver and gold to sell.
The copper ore must have copper more than 30 or 35% to be viable for copper recovery.
You can send 100gm sample with copper ore with copper >35% copper and 100 gm copper ore with copper >30% with silver and gold % for Zhong to do lab test.
The samples must be homogeneous to represent the actual stock