Some component categories have active or expired Section 301 exclusion requests — monitor USTR exclusion list for your critical components
First Sale Valuation: for components purchased from a distributor that were originally imported, customs value may be based on the original import price — can reduce effective tariff basis
Bonded warehouse / FTZ: for high-volume programs, Free Trade Zone processing can defer or reduce tariff impact — ask Amtech about FTZ-eligible programs