Copper ore
Copper ore, copper concentrate
Copper ore, copper concentrates, copper matte
Aluminum and copper
Copper ore
Copper, aluminum
Copper sludge
Copper and aluminum items
Concentrated copper
Copper ore
Copper ore
Copper wire scrap millberry
Copper ore, copper concentrate, coarse copper
Copper, aluminum
PCB material, such as fr4 , aluminum base, copper base, solder, etc.
Copper ore
Copper sulphate
Copper ore
Copper ore
Brass and copper