Analysis
HTS 4702.00.00 covers chemical woodpulp, dissolving grades under heading 4702 (chemical woodpulp, dissolving grades). US Customs collects import statistics for it under 2 ten-digit suffixes, reported in t adw.
For statistics it divides in two: 4702.00.00.20 for sulfite and 4702.00.00.40 for sulfate or soda. Both pay the same duty; the suffix records which kind was imported.
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 4702.00, 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 4702.00 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.