HS Code 4705
Semi-Chemical Wood Pulp
HS code 4705 refers to wood pulp obtained by combining mechanical and chemical processes, offering a balance of high yield and improved fibre strength.
HS Code 4705 — Semi-Chemical Wood Pulp
This code covers wood pulp produced by a combination of chemical and mechanical processes (often called CTMP or semi-chemical). The wood is partially softened with chemicals before being mechanically refined, balancing strength and yield.
What's included
- Chemi-thermomechanical pulp (CTMP)
- Semi-chemical wood pulp
- Neutral sulphite semi-chemical (NSSC) pulp
What's excluded
- Pure mechanical pulp → use
4701(If no chemicals are used in the softening process, it belongs in 4701.)
Common examples
- CTMP for paperboard
- NSSC pulp for corrugated medium
- Semi-chemical pulp for high-quality tissue
Frequently asked questions
What is CTMP?
Chemi-thermomechanical pulp (CTMP) is wood pulp where chips are treated with chemicals and heat before being ground mechanically.
Trade & shipping notes
- Typical duty range: 0%
- Documentation: Determination of 'semi-chemical' is based on the industrial process used at the mill.
- Typical shipping mode: FCL
- Top exporters: Canada, Sweden, New Zealand
- Top importers: China, USA, India
Related HS codes
Key takeaway
A hybrid pulp used for corrugating and boards that combines the high yield of mechanical pulp with chemical strength.
Related HS codes
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