Importers of HS 3919.10 (having a light-reflecting surface produced in whole or in pa) from Taiwan actually paid 15.8% on the taxed portion of the value in 2026-06 — 15.8% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 6.5%. Over the window the rate on the taxed portion moved 5.8% → 15.8%, with the largest single step -7.9pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 6.5% — importers actually paid 15.8%, so the trade-war overlay added 9.3 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "3919.10", origin: "Taiwan") · see it at trimtabist.com/tariffs
HS 3919.10. The schedule base rate is 6.5%; importers from Taiwan actually paid 15.8% on the dutiable value in 2026-06 — the trade-war overlay added 9.3 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 5.8% (2023-07) → 15.8% (2026-06), largest single step -7.9pp in 2026-03.
Taiwan's lower duty (15.8% vs 37.28%) lets it price up to 18.5% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $2.72/kg vs $3.3/kg (duty in, freight out).
All goods from Taiwan · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "3919.10", origin: "Taiwan") via /connect. Not customs or legal advice.