The tariff classification of a silicon wafer from Finland.
The tariff classification of a doped silicon ingot, 99.99percent pure from either Czechoslovakia or Korea.
The tariff classification of trichlorosilane CAS# 10025-78-2, metallurgical grade silicon CAS# 7440-21-3, and polysilicon from Russia, China, Norway and Brazil
The tariff classification of Polycrystalline Hyperpure Silicon fromUkraine
The tariff classification of evaporation materials from China