Copper, aluminum
PCB material, such as fr4 , aluminum base, copper base, solder, etc.
Copper ore
Copper sulphate
Copper ore
Copper ore
Brass and copper
Aluminium, copper
Copper, aluminum
Aluminum & copper
Copper ore
Copper ore
Copper, aluminium
Copper ore
Raw iron & copper
No1 copper, no2 copper (birch cliff) , brass honey
Copper, brass /(20-(100/ 60)6, 50)5
Aluminium and copper product
Copper, tin