HS Code 390721: Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate

Q: Is HS code 390721 the same in every country?

Yes — HS code 390721 is part of the WCO Harmonized System and is the same in every WCO member country at the 6-digit level. Beyond 6 digits, each country extends the code under its own system (e.g. HTSUS in the US, CN/TARIC in the EU, HSK in Korea, CCCHS in China) for national tariff rates and trade statistics. To see how a specific country classifies this code, select a country.

Q: Which WCO edition does HS code 390721 belong to, and has it been reclassified?

The Harmonized System is maintained by the World Customs Organization (WCO) and revised approximately every five years. The current edition is HS 2022, which replaced HS 2017 on 1 January 2022. Codes are added, merged, or split between editions to reflect new products and trade patterns, so a code valid in one edition may not exist or may mean something different in another.

Q: How do I find the correct country-specific version of HS code 390721?

Beyond the international 6-digit level, each country adds its own digits — the US extends to 10 digits (HTSUS), the EU to 8 or 10 (CN/TARIC), China to 13 (CCCHS), Korea to 10 (HSK), Japan to 9, and so on. To find the full code used by a specific country, select a country in TradeInt's HS Code Tool and search for 390721.

What is HS Code 390721

HS Code 390721 covers Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate. It is a 6-digit subheading — the deepest level of the international HS — within: · Section VII — Plastics and articles thereof; rubber and articles thereof · Chapter 39 — Plastics and articles thereof · Heading 3907 — Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms. At 6 digits, this code is the same in every HS-adopting country. From digit 7 onward, each country extends it.

Explore global 2026 latest import export trade data and shipment records for Polyether Methylphosphonate on TradeInt global trade data platform

What does HS Code 390721 Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate Cover?

Section VII

Chapters (39-40) Plastics and articles thereof; rubber and articles thereof

Chapter 39

Plastics and articles thereof

HS Code 3907

Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms

HS Code 390721

Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate

Click any HS code above to see live 2026 latest Polyether Methylphosphonate trade data including exporters, importers, and shipment volumes.

What HS Codes for Plastics Do Not Cover

Chapter 39 covers plastics in primary form and articles made of plastic. Goods frequently misclassified here but that belong elsewhere include:

Synthetic textile yarns and fibers

Chapters 54, 55

Footwear of plastic

Chapter 64

Plastic furniture

Chapter 94

Plastic toys, games, and sports equipment

Chapter 95

This list highlights common classification errors only — it is not exhaustive. For binding classification, work with a licensed customs broker or qualified trade compliance professional.

Top Trading Countries for Polyether Methylphosphonate HS 390721

India

Key Importer & Exporter

Mexico

Key Importer & Exporter

United States of America

Key Importer & Exporter

Viet Nam

Key Importer & Exporter

Frequently Asked Questions

What is HS code 390721?

HS code 390721 covers Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate under the WCO Harmonized System. It belongs to Chapter 39 (Plastics and articles thereof), Heading 3907, and represents the most specific level of classification that is harmonized internationally.

Is HS code 390721 the same in every country?

Which WCO edition does HS code 390721 belong to, and has it been reclassified?

How do I find the correct country-specific version of HS code 390721?