Subheading · Chapter 39 · Heading 3913
3913.90: Natural polymers: other
Other natural and modified natural polymers
Official description Other
3913.90 is the HS subheading for other natural and modified natural polymers, under heading 3913 in chapter 39.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 3913 90 00 00 Other
- 3913 90 00 20 Poly(hydroxyalkanoate), predominantly consisting of poly(3-hydroxybutyrate) Free
- 3913 90 00 40 Xanthan gum Free
- Sodium hyaluronate
- 3913 90 00 85 Sterile sodium hyaluronate (cas rn 9067-32-7) Free
- Non sterile
- 3913 90 00 87 With: - a weight average molecular weight (mw) of not more than 900 000, - an endotoxin level of not more than 0.008 endotoxin units (eu)/mg, - an ethanol content of not more than 1% by weight, - an isopropanol content of not more than 0.5% by weight Free
- 3913 90 00 88 Other Free
- 3913 90 00 95 Chondroitinsulphuric acid, sodium salt (cas rn 9082-07-9) Free
- 3913 90 00 99 Other Free
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 2
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 833
- Documents
- 9018
- Duty suspensionAutonomous tariff suspension Free
- Applies to goods from
- all countries
- In force
- until 31 December 2028
- Legal act
- 2020 No. 1435
- Tariff lines
- on 1 of 7 lines
Import requirements 3
- Import controlVeterinary control
- Applies to goods from
- Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antarctica and 232 more
- Legal act
- S.I. 2019/782
- Documents
- C084 Exemption by virtue of Articles 3 and 4 of regulation 2019/2122 (animals intended for scientific purposes, research and diagnostic samples, and samples for product analysis and quality testing).
- N853 Common Health Entry Document for Products (CHED-P) (as set out in Part 2, Section B of Annex II to Commission Implementing Regulation (EU) 2019/1715 (OJ L 261))
- Y058 Exemption by virtue of Article 7 of Commission Delegated Regulation 2019/2122 (Goods which form part of passengers' personal luggage and are intended for personal consumption or use) or Article 10 (small consignments of goods sent to natural persons which are not intended to be placed on the market) of Commission Delegated Regulation 2019/2122
- Y930 The declared goods are not concerned by Commission Implementing Regulation (EU) 2021/632
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Ukraine
- Legal act
- S.I. 2022/395
- Documents
- 9009
- 9010
- 9017
- Import controlImport control - Waste
- Applies to goods from
- all countries
- Legal act
- S.I. 2019/590
- Documents
- C672 Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
- C669 Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA
- Y923 Product not subjected to the provisions of Regulation (EU) 2024/1157
- C670 Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code "EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Same subheading in other tariffs
EU
TürkiyeWorld trade in 2024
Trade value (US$) no reported trade < US$784.3kUS$784.3k+US$8.5m+US$45m+> US$229.2m
Exports: 109
- China: US$970.1m
- Sweden: US$583m
- United States: US$334m
- France: US$229.2m
- Austria: US$210m
- Netherlands: US$170.3m
- Italy: US$143.3m
- Germany: US$108.9m
- Denmark: US$89.6m
- Japan: US$56.2m
- United Kingdom: US$45m
- Switzerland: US$44.1m
- Belgium: US$42.8m
- Czechia: US$41.1m
- Spain: US$40.2m
- South Korea: US$23.8m
- Canada: US$22m
- Argentina: US$21m
- Israel: US$17.7m
- Brazil: US$17m
- Colombia: US$14.8m
- Singapore: US$12.2m
- Indonesia: US$12.1m
- India: US$11.5m
- Vietnam: US$11.5m
- Poland: US$10.9m
- Slovakia: US$8.5m
- Thailand: US$8.4m
- Ireland: US$8.3m
- Iceland: US$8.3m
- Australia: US$6.5m
- Hong Kong SAR China: US$5.8m
- Norway: US$5.7m
- Panama: US$4.3m
- Bulgaria: US$4.1m
- Lithuania: US$3.3m
- Pakistan: US$3.1m
- Romania: US$3m
- South Africa: US$2.8m
- Egypt: US$2.7m
- Türkiye: US$2.5m
- French Polynesia: US$2.2m
- Malaysia: US$2.2m
- Finland: US$1.9m
- Taiwan: US$1.9m
- Portugal: US$1.4m
- Mexico: US$1.3m
- United Arab Emirates: US$1.2m
- Russia: US$1m
- Chile: US$1m
- Hungary: US$896.8k
- Saudi Arabia: US$866.5k
- Ecuador: US$784.3k
- Estonia: US$692.7k
- Kuwait: US$634k
- Angola: US$563.1k
- Croatia: US$507k
- Slovenia: US$461.3k
- Eswatini: US$420.2k
- Senegal: US$407.1k
Trade value (US$) no reported trade < US$848.9kUS$848.9k+US$9.5m+US$50.6m+> US$156.1m
Imports: 191
- United States: US$439.6m
- South Korea: US$249.4m
- Germany: US$228m
- Japan: US$181.1m
- Netherlands: US$157.5m
- Italy: US$156.1m
- Switzerland: US$145.9m
- China: US$144.7m
- France: US$124.5m
- Singapore: US$97.5m
- Spain: US$95.9m
- Russia: US$78.7m
- Belgium: US$78.5m
- Mexico: US$72.7m
- India: US$72.3m
- Saudi Arabia: US$71.2m
- Canada: US$71.1m
- Brazil: US$67.5m
- United Kingdom: US$50.6m
- United Arab Emirates: US$44.8m
- Ireland: US$43.1m
- Poland: US$40.3m
- Thailand: US$35.1m
- Taiwan: US$33.5m
- Indonesia: US$32.1m
- Argentina: US$32.1m
- Türkiye: US$31.2m
- Sweden: US$30.8m
- Australia: US$30.6m
- Denmark: US$26.9m
- Malaysia: US$22.1m
- Slovenia: US$21.2m
- Vietnam: US$19.4m
- Austria: US$19.1m
- Israel: US$14.5m
- Colombia: US$14.4m
- Philippines: US$14m
- Greece: US$12.4m
- Chile: US$12.2m
- Kuwait: US$11.7m
- Qatar: US$11.5m
- Norway: US$11.2m
- Estonia: US$10.4m
- Egypt: US$10.1m
- Czechia: US$9.8m
- Peru: US$9.7m
- Ecuador: US$9.7m
- Portugal: US$9.5m
- South Africa: US$9.1m
- Hungary: US$8.6m
- Croatia: US$8m
- Pakistan: US$7.9m
- Romania: US$7.8m
- Slovakia: US$7.4m
- Finland: US$6.9m
- Oman: US$6.9m
- Bangladesh: US$6m
- Ukraine: US$5.6m
- Morocco: US$5.3m
- Bulgaria: US$5.3m
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 |  China | US$970.1m | 28.7% |
| 2 |  Sweden | US$583m | 17.2% |
| 3 |  United States | US$334m | 9.9% |
| 4 |  France | US$229.2m | 6.8% |
| 5 |  Austria | US$210m | 6.2% |
| 6 |  Netherlands | US$170.3m | 5% |
| 7 |  Italy | US$143.3m | 4.2% |
| 8 |  Germany | US$108.9m | 3.2% |
| 9 |  Denmark | US$89.6m | 2.6% |
| 10 |  Japan | US$56.2m | 1.7% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | United States | US$439.6m | 13% |
| 2 |  South Korea | US$249.4m | 7.4% |
| 3 | Germany | US$228m | 6.7% |
| 4 | Japan | US$181.1m | 5.4% |
| 5 | Netherlands | US$157.5m | 4.7% |
| 6 | Italy | US$156.1m | 4.6% |
| 7 |  Switzerland | US$145.9m | 4.3% |
| 8 | China | US$144.7m | 4.3% |
| 9 | France | US$124.5m | 3.7% |
| 10 |  Singapore | US$97.5m | 2.9% |
Binding rulings for similar goods 9
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N355070 U.S. CBP
The tariff classification of poly(3-hydroxybutyrate)-co-3-hydroxyhexanoate) from Japan
- N334307 U.S. CBP
The tariff classification of chitosan from India
- N334040 U.S. CBP
The tariff classification of yeast beta glucan from China
- N330860 U.S. CBP
The tariff classification of Arabinoxylan (CAS No. 9040-27-1) from Poland
- N328429 U.S. CBP
The tariff classification of potassium humate from Germany
- N310660 U.S. CBP
The tariff classification of chitosan lactate (CAS# 66267-50-3) from China
9 rulings in total for this code
In the UK Global Tariff, subheading 3913.90 covers 7 tariff lines and the duty is duty-free.
The EU Combined Nomenclature has one tariff line for subheading 3913.90; the duty is 6.5%.
Goods from 174 countries can enter the UK at a preferential rate instead of the standard Free; 174 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
In the 12 months to August 2026, the UK imported other natural and modified natural polymers worth £48.6m (down 8% on the year before), at an average of £6.85 per kg.
World trade in other natural and modified natural polymers reached US$3.4bn in 2024, down 4.7% on 2023.
China was the largest exporter with 28.7% of the total, ahead of Sweden.
Products classified here
Questions and answers
What is the HS code for natural polymers: other?
Natural polymers: other fall under HS subheading 3913.90, part of heading 3913, in section VII of the Harmonized System.
What is the import duty on natural polymers: other in the UK?
Under the UK Global Tariff, imports under 3913.90 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on natural polymers: other in the EU?
Under the EU Combined Nomenclature, imports under 3913.90 from countries without a preferential agreement are charged at 6.5%. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most natural polymers: other?
China, with US$970.1m in 2024 (28.7% of world exports).
Which countries can export other natural and modified natural polymers to the UK duty-free?
174 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Is there anti-dumping duty on other natural and modified natural polymers?
The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.