Harmonized System
Section XV > Chapter 73 > Heading 7326
Other articles of iron or steel.
Section XV > Chapter 73 > Heading 7326 > 7326.1
Forged or stamped, but not further worked
Section XV > Chapter 73 > Heading 7326 > 7326.1 > 7326.11
Grinding balls and similar articles for mills
Section XV > Chapter 73 > Heading 7326 > 7326.20
Articles of iron or steel wire
Section XV > Chapter 74
Copper and articles thereof
Section XV > Chapter 74 > Heading 7401
Copper mattes; cement copper (precipitated copper).
Section XV > Chapter 74 > Heading 7401 > 7401.00
Copper mattes; cement copper (precipitated copper)