Product classification
HS code for Electrolysis apparatus: 8543.30
Electrical machines and apparatus, for electroplating, electrolysis or electrophoresis.
Classification of electrolysis apparatus under HS 8543.30
Electrolysis apparatus is classified under HS code 8543.30. This code falls within Chapter 85, which covers electrical machinery and equipment and parts thereof. Heading 8543 is a broad category for electrical machines and apparatus, having individual functions, not specified or included elsewhere in Chapter 85. Subheading 8543.30 specifically addresses machines and apparatus for electroplating, electrolysis, or electrophoresis. These devices use electrical energy to drive non-spontaneous chemical reactions or to move charged particles in a fluid. The classification includes a wide range of industrial and laboratory equipment designed for these specific electrochemical processes. Under the Harmonized System's General Rules of Interpretation, if a machine's primary function is the electrolytic treatment of materials, it must be classified here unless it is more specifically described in another heading. This includes both the tanks or cells where the reaction occurs and the specialized electrical control units integrated into the apparatus. The classification remains consistent regardless of whether the apparatus is used for metal recovery, chemical production, or surface treatment, provided the core mechanism is electrolytic.
- Covers
- Industrial electroplating tanks and equipment
- Water electrolyzers for hydrogen production
- Electrolytic cells for metal refining
- Electrophoresis chambers for laboratory use
- Anodizing equipment for aluminum treatment
- Also under 8543.30
- Dynapower rectifiers
- Technic electroplating systems
- Bio-Rad electrophoresis power supplies
- Elga Purelab water purification systems (electrolytic components)
Codes often confused with 8543.30
Common mistake. Electrolysis apparatus is often confused with HS code 8419, which covers machinery for the treatment of materials by a process involving a change of temperature. While some electrolysis processes generate heat, the primary function is electrochemical, not thermal. Another common misclassification is HS code 8421, which covers filtering or purifying machinery. While electrolysis can be used for water purification, the specific nature of the electrolytic process directs the classification to 8543.30. Additionally, laboratory-specific electrolysis units are sometimes incorrectly placed in Chapter 90, but 8543.30 is the more specific heading for the electrical apparatus itself.
Top exporters and importers of HS 854330 (the code used for electrolysis apparatus), 2025
In 2025, the largest exporter of HS 854330 (the code used for electrolysis apparatus) in UN Comtrade data was China, with 40% of world exports; the largest importer in UN Comtrade data was Indonesia, with 17% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 854330, not only electrolysis apparatus.
Top exporters 2025 · share of world exports
- 1 China $962M 40% of world exports
- 2 United States $184M 7.6% of world exports
- 3 Vietnam* ~$176M 7.3% of world exports · partner records ↗
World total: $2.4B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Indonesia $462M 17% of world imports
- 2 China $264M 9.6% of world imports
- 3 Thailand $178M 6.5% of world imports
World total: $2.8B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for electrolysis apparatus
Brazil splits HS 8543.30 into 2 NCM codes. Pick the one that matches your product:
- 8543.30.10Membrane-cell electrolysis apparatus
- 8543.30.90Other electrolytic and electrophoresis apparatus
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about electrolysis apparatus
What is the HS code for Electrolysis apparatus?
The HS code for Electrolysis apparatus is 854330 (Electrical machines and apparatus; for electroplating, electrolysis or electrophoresis). The standard HS code for electrolysis, electroplating, and electrophoresis apparatus is 8543.30.
How do I classify Electrolysis apparatus for customs?
Electrolysis apparatus is classified under HS code 854330 — Electrical machines and apparatus; for electroplating, electrolysis or electrophoresis. This is a 6-digit subheading level code.
Does this code include equipment for hydrogen production?
Yes, water electrolyzers used to produce hydrogen gas through the electrolysis of water are classified under HS code 8543.30.
Which countries are the top exporters of electrolysis apparatus (HS 854330)?
In 2025, the top exporters of HS 854330 (the code used for electrolysis apparatus) in UN Comtrade data were China ($962M, 40% of world exports), the United States ($184M) and Vietnam (about $176M). World exports came to about $2.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of electrolysis apparatus (HS 854330)?
In 2025, the top importers of HS 854330 (the code used for electrolysis apparatus) in UN Comtrade data were Indonesia ($462M, 17% of world imports), China ($264M) and Thailand ($178M). World imports came to about $2.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Electrolysis apparatus the same in all countries?
The base HS code 854330 for Electrolysis apparatus is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for electrolysis apparatus in Brazil?
Brazil splits HS 854330 into 2 NCM codes, so the right one for electrolysis apparatus depends on the product's details: 8543.30.10 (Membrane-cell electrolysis apparatus), 8543.30.90 (Other electrolytic and electrophoresis apparatus).