Customs HS code of solar panels: 8541402000, tax rebate rate 17%, no product inspection required
HS code of lamp head: 8536610000, tax rebate rate 17%, product inspection required
PS: Because I don't know the material of your lamp head, a more accurate HS code cannot be given. The current tax classification of lamp holders refers to lamp holders with a voltage ≤ 1000 volts. After all, tax refund rates may be different depending on the HS code.