HS Codes - 79: Zinc and articles thereof

7901
Unwrought zinc
7901
Zinc, not alloyed :
7901.11
Containing by weight 99.99% or more of zinc
7901.11.010
1 Not more than 242yen/kg in value for customs duty
7901.11.020
2 More than 242yen/kg but not more than 250yen/kg in value for customs duty
7901.11.030
3 More than 250yen/kg in value for customs duty
7901.12
Containing by weight less than 99.99% of zinc
7901.12.010
1 Not more than 242yen/kg in value for customs duty
7901.12.020
2 More than 242yen/kg but not more than 250yen/kg in value for customs duty
7901.12.030
3 More than 250yen/kg in value for customs duty
7901.20
Zinc alloys
7901.20.010
1 Containing by weight more than 3% of aluminium
7901.20
2 Other
7901.20.021
(1)Containing by weight 95% or more of zinc
7901.20.029
(2)Other
7902.00.000
Zinc waste and scrap
7903
Zinc dust, powders and flakes
7903.10.000
Zinc dust
7903.90.000
Other
7904.00.000
Zinc bars, rods, profiles and wire
7905.00.000
Zinc plates, sheets, strip and foil
7907.00
Other articles of zinc
7907.00.100
1 Zinc tubes, pipes and tube or pipe fittings (for example, couplings, elbows, sleeves)
7907.00.900
2 Other

Need help to the find appropriate HS Code ?