Chemi-Thermomechanical Pulp (CTMP)
Chemi-Thermomechanical Pulp (CTMP) is manufactured by treating wood chips with chemicals such as sodium sulfite before mechanical refining under steam pressure, yielding high-strength, high-yield pulp. This integrated chemical and mechanical process classifies it under tariff item 4705.00.00 as wood pulp from combined pulping processes.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the chemical treatment is extensive and the mechanical step is secondary
Pulp with predominant chemical pulping is classified under heading 47.03.
If the chemical used is sulphite and the pulp is bleached
Bleached sulphite chemical pulp falls under heading 47.04.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Maintain supplier certificates detailing the chemical and mechanical steps to support the 4705.00.00 classification
• Verify that the pulp does not meet dissolving grade criteria (insoluble fraction ≥92% for soda/sulphate or ≥88% for sulphite) to avoid reclassification
• Include the chemical charge and refining conditions in your import documentation
Related Products under Tariff item 4705.00.00
Bleached Chemi-Thermomechanical Pulp (BCTMP)
Bleached Chemi-Thermomechanical Pulp (BCTMP) is produced by chemically treating wood chips with sodium sulfite or similar agents, followed by mechanical refining under steam pressure, and then peroxide bleaching to achieve high brightness. This combined chemical and mechanical process qualifies it as wood pulp obtained by a combination of mechanical and chemical pulping processes under tariff item 4705.00.00.
Chemi-Groundwood Pulp (CGP)
Chemi-Groundwood Pulp (CGP) involves treating wood chips with mild chemicals to soften them before mechanical grinding between stones, combining chemical and mechanical actions in the pulping process. This hybrid method places it under tariff item 4705.00.00 as wood pulp obtained by a combination of mechanical and chemical pulping processes.
Eucalyptus CTMP
Eucalyptus CTMP is a chemi-thermomechanical pulp made from eucalyptus wood, combining chemical pretreatment and mechanical refining to produce fluff pulp with high absorbency. This combined pulping process places it under tariff item 4705.00.00 as wood pulp obtained by a combination of mechanical and chemical processes.
Hardwood Semi-Chemical Pulp
Hardwood Semi-Chemical Pulp is produced from hardwoods like aspen or eucalyptus using a chemi-mechanical process that combines chemical softening with mechanical defibration. This hybrid method qualifies it under tariff item 4705.00.00 as wood pulp from combined mechanical and chemical pulping, suitable for tissue and fluff applications.
High-Yield Bleached Pulp
High-Yield Bleached Pulp is a semi-chemical pulp with a yield above 90%, produced through a combination of chemical treatment and mechanical refining, followed by bleaching. This high-yield combined process classifies it under tariff item 4705.00.00 as wood pulp obtained by a combination of mechanical and chemical pulping processes.
Newsprint Grade CTMP
Newsprint Grade CTMP is chemi-thermomechanical pulp optimized for newsprint production, featuring specific freeness and opacity achieved through combined chemical and mechanical pulping. This hybrid process places it under tariff item 4705.00.00 as wood pulp from a combination of mechanical and chemical processes.