Analysis
HTS 4701.00.00 covers mechanical woodpulp under heading 4701 (mechanical woodpulp).
There is no general-rate duty on this line, which puts it with roughly 100% of the 21 tariff lines in chapter 47 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
It is the only US line under subheading 4701.00, so the six-digit code used by every Harmonized System country and the eight-digit US line describe the same goods; a foreign tariff or an exporter's invoice showing 4701.00 points straight here.
Census statistics map these goods to NAICS 322110 (Pulp Mills), an industry of 35 US establishments employing 9,609 people, the industry a domestic producer of these goods reports under.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.