A certificate of origin for an electrostatic precipitator shipped from China is a document, issued against the commercial invoice, that states the country where the unit was made. A preferential certificate lowers the import duty only where an agreement with your country is in force and your tariff line has a rate left to lower. A non-preferential one proves origin and changes no rate.
The costly mistake is not asking for the wrong form. It is learning at the port that a form was needed, after the vessel has sailed and the proforma invoice is closed. This page tells you, for the thirteen destinations we ship to most, which paper exists, whether it touches the duty on an in-duct ESP line, and what to write on the enquiry so the certificate is on the proforma invoice before production starts.
This page helps you decide which electrostatic precipitator certificate of origin, if any, to ask your Chinese supplier for, and whether it changes the duty at your port. It gives a sheet of thirteen destinations, the origin rule behind a preferential certificate, the point in the order at which the application is made, and the five places to check on a certificate you have been sent. It does not classify your unit, set the duty rate or replace your broker’s declaration. For the tariff line itself, see our electrostatic precipitator HS code page; for the full shipping document set, see the pre-shipment inspection checklist.
| Question | Our answer |
|---|---|
| What a certificate of origin states | The country where the electrostatic precipitator was produced, for one consignment, with the exporter, the invoice number and the HS code on its face |
| The two kinds | Non-preferential: proves origin for clearance, changes no rate. Preferential: claims a lower rate under an agreement in force between China and the importing country |
| Who issues it in China | China Customs, through its origin e-government platform, and the China Council for the Promotion of International Trade (CCPIT), through its online certification system; each agreement names the authority it accepts |
| Where a form can lower the duty on an ESP | Where an agreement is in force and the national line still carries a rate: Australia (ChAFTA), the ASEAN markets (Form E or Form RCEP), Korea, Pakistan, Maldives, and India, Bangladesh and Sri Lanka under the Asia-Pacific Trade Agreement, line by line |
| Where no form lowers it | The UK (third-country duty 0.00% on 8421 39 25 90), the EU, the US, Canada, the GCC, Turkey, Mexico and Brazil, with no agreement in force; and Singapore and Hong Kong (China), where an ESP is not a dutiable good |
| The sheet | The 13-Destination ESP Origin Paper Sheet: destination, agreement, paper, effect on the ESP line, what to ask for |
| What we do on an order | Write the form your broker named on the proforma invoice, apply for it against the commercial invoice before shipment, and send the certificate with the shipping documents from Shanghai Port |
| Not on this page | Your duty rate, the HS classification, the shipping document set, supplier verification; each has its own page, linked where it comes up |
- Two kinds of certificate, and only one of them touches the duty
- The 13-Destination ESP Origin Paper Sheet
- What the exporter has to show: the origin rule behind Form E
- When to ask, and what goes on the proforma invoice
- Checking a certificate you have been sent: five places
- Scope and limits
- Buyer record and key takeaways
- Frequently asked questions
Two kinds of certificate, and only one of them touches the duty
A preferential certificate of origin is the only kind that can change what you pay at the border. The World Customs Organization puts the split plainly: there is no international definition of origin, but a distinction is made between two systems, preferential and non-preferential; in the preferential case everything is based on bilateral or multilateral agreements, and in the non-preferential case each country applies its own rules. The International Chamber of Commerce, whose chamber network issues certificates worldwide, uses the same two labels: non-preferential certificates, known as normal certificates, for goods not subject to preferential treatment, and preferential certificates for goods subject to reduced tariffs or exemptions under a trade agreement.
For an electrostatic precipitator built in China, that gives a two-step test before any form is requested. First: is there an agreement in force between China and the importing country? If not, there is no preferential certificate to issue, and a non-preferential one is a clearance document only. Second: does the national tariff line for the unit still carry a rate above the preferential one? Where the third-country rate is already 0%, as it is on the UK line for air-filtering machinery read below, the preferential certificate has nothing to lower, even where an agreement exists.
In China, two bodies issue certificates. China Customs runs the origin e-government platform, where a certificate is looked up by its number and shows the exporter, the invoice number, the HS code, the destination and the place and date of issue. The CCPIT certification system issues certificates online through its local branches, including the non-preferential certificate most Gulf and African brokers ask for. Which body an importing country accepts for a preferential claim is written in the agreement: the ASEAN-China rules, read in the next sections, say the certificate is issued by the government authorities of the exporting Party.
Decision rule. IF your destination is on the agreement list and your broker reads a rate above the preferential one on your line, THEN name the preferential form on the enquiry, BECAUSE the certificate is applied for in China against the commercial invoice and has to be on the proforma invoice as a deliverable. IF either test fails, THEN ask for a non-preferential certificate only if the broker says clearance requires one, and spend the attention on the classification instead, which is where the rate is decided.
The 13-Destination ESP Origin Paper Sheet
The sheet below covers the destinations our in-duct electrostatic precipitators, ESP hoods and kitchen ecology units go to most. For each one it says whether an agreement with China is in force, what paper claims it, what the paper does to an in-duct ESP line, and what to ask the supplier for. Where we read a tariff page ourselves, the row says so and gives the date; where we did not, the row says that the broker reads the line, and we do not guess a rate. The ESP line referred to is the one your broker settles under heading 84.21, as set out on our HS code page; an ESP hood may sit under heading 84.14 and carries its own rate.
A preferential certificate is worth asking for when the destination is Australia, an ASEAN market, Korea, Pakistan, Maldives, or an APTA member whose concession list carries the line. It is a clearance document and nothing more everywhere else on this sheet.
The 13-Destination ESP Origin Paper Sheet (our own working sheet, not a customs ruling; tariff pages read 10 October 2026)
| # | Destination | Agreement with China in force | Paper that claims it | Effect on an in-duct ESP line | What to ask the supplier for |
|---|---|---|---|---|---|
| 1 | United Kingdom | None | None to claim | The UK Online Tariff shows a third-country duty of 0.00% on commodity 8421 39 25 90 and lists no tariff preference for China; the hood line 8414 60 00 00 shows 2.00%, again with no preference for China | Nothing that lowers the rate. A non-preferential certificate only if your broker asks for one |
| 2 | European Union (France, Italy, Spain, Poland, Sweden, Netherlands, Finland, Greece, Germany, Portugal) | None | None to claim | The third-country duty in TARIC for the line your broker settles; not read here | A non-preferential certificate if clearance requires one; nothing lowers the rate |
| 3 | United States | None | None to claim | The Harmonized Tariff Schedule shows subheading 8421.39.01 at a general rate of Free. Chapter 99 adds duties on products of China: heading 9903.88.03 reads “the duty provided in the applicable subheading + 25%” for articles listed in U.S. note 20(e) and 20(f) to that subchapter. Which Chapter 99 headings apply to your entry on the day is your broker’s check, and origin is what triggers them | Nothing that lowers the rate; origin is declared on the entry. Ask the broker for the Chapter 99 stack before the proforma invoice is signed |
| 4 | Canada | None | None to claim | The rate on the Customs Tariff line; not read here | A non-preferential certificate if asked |
| 5 | Australia | China-Australia FTA (ChAFTA), in force since 20 December 2015 | A ChAFTA certificate of origin issued in China, or a declaration of origin where the Australian rules allow one; the Department of Foreign Affairs and Trade publishes both | The ABF Working Tariff shows a general rate of 5% on 8421.39.90. Schedule 12, the ChAFTA schedule, says all rates are Free except for the subheadings in its table, and heading 8421 is not in that table | The ChAFTA certificate, named on the proforma invoice. Without it the general rate applies to the line |
| 6 | Singapore | ASEAN-China FTA, China-Singapore FTA and RCEP | ACFTA Form E, CSFTA preferential certificate or RCEP Form RCEP, transmitted electronically from China; Singapore Customs lists all three | Singapore Customs frames preferential treatment around dutiable goods such as beer and samsu. An electrostatic precipitator is not a dutiable good there, so there is no customs duty to lower; GST applies | Ask the declaring agent to confirm that no duty applies; no form is needed for the rate |
| 7 | Hong Kong (China); Macao (China) | The Closer Economic Partnership Arrangements with the Mainland | Not needed for this line | Hong Kong Customs charges duty on four commodity types only: liquor, tobacco, hydrocarbon oil and methyl alcohol. An ESP is none of them. Macao: ask the declarant | None for the duty |
| 8 | Malaysia, Vietnam, Thailand, Indonesia, Philippines | ASEAN-China FTA and RCEP | Form E under the ASEAN-China rules, issued by the government authority of the exporting Party, or Form RCEP | Whether the line still carries a rate to lower is in each national tariff; not read here | Ask the broker which form gives the lower rate on your line, then name it on the enquiry |
| 9 | GCC: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain | None in force. China’s Ministry of Commerce lists the China-GCC FTA as under negotiation, with news items running to the ninth round in December 2016 | None to claim | The GCC rate on the line; no preference | A non-preferential certificate where the importer’s authority requires it; ask whether it must be attested |
| 10 | Republic of Korea | China-Korea FTA, in force since 20 December 2015 | A certificate of origin under that agreement | The Korean schedule decides; not read here | Ask the broker whether the Korean line carries a rate to lower, then name the form |
| 11 | India, Bangladesh, Sri Lanka | The Asia-Pacific Trade Agreement (APTA), of which China is a member | An APTA certificate of origin | Only lines on the importing country’s concession list receive the preference | Ask the broker whether the line, as classified, is on the concession list before asking for the form |
| 12 | Pakistan; Maldives | China-Pakistan FTA; China-Maldives FTA, signed 8 December 2017 and in force since 1 January 2025 | A certificate of origin under the agreement | The national schedule decides; not read here | Same as row 10 |
| 13 | Turkey, Mexico, Brazil, Colombia, South Africa, Egypt, Morocco | None in force | None to claim | The rate on the national line; Turkey and Mexico also run import controls on this line, read on our Turkey and Mexico pages | A non-preferential certificate if required for clearance; nothing lowers the rate |
This sheet answers whether a form is worth asking for. It does not answer what the duty will be; that is the line your broker reads on the day of entry, and rates and agreements both move. Rows 2, 4, 8, 10, 11 and 12 say “not read here” because the official tariff pages for those countries did not give us the line text to quote, and a rate we cannot quote we do not write. What the form changes is one line of the delivered cost; the other eleven are on our electrostatic precipitator landed cost page.
What the exporter has to show: the origin rule behind Form E
A preferential certificate is granted against an origin rule, and the rule is written in the agreement, not chosen by the supplier. The ASEAN-China rules are the ones most of our ASEAN-bound shipments are checked against, and they are public: Annex 3, Rules of Origin for the ASEAN-China Free Trade Area, as posted by the ASEAN Secretariat. Rule 2 says a product is originating if it is wholly produced or obtained in a Party, or if it meets Rule 4. Rule 4(a) says a product not wholly produced is originating if not less than 40% of its content originates from any Party, or if the value of materials from outside the area does not exceed 60% of the FOB value of the product. Rule 12 says a claim for preference is supported by a certificate of origin issued by a government authority designated by the exporting Party. The operational procedures attached to the Annex open with Rule 1: the certificate is issued by the government authorities of the exporting Party.
What that means for an in-duct electrostatic precipitator or kitchen ecology unit built in Jiangsu: the exporter declares the origin criterion on the application, and the issuing authority certifies it; the criterion appears on the certificate itself. We do not publish a regional value content figure for our models, and a buyer does not need one. What the buyer needs is that the exporter named on the certificate is the entity on the proforma invoice, and that the HS code on the certificate is the one the broker settled. A certificate carrying a code the importing customs does not accept for the goods is the most common reason a preference claim is refused at the counter, and it is avoidable before shipment by reading the classification first.
Two more rules in the same Annex decide whether the certificate survives the voyage. Rule 8, direct consignment, treats goods as consigned directly when they move without passing through a non-member state, or transit one with the goods staying under customs control and undergoing no operation beyond unloading and reloading. Rule 10 of the procedures allows a certificate to be issued retroactively, bearing the words “ISSUED RETROACTIVELY”, for no longer than one year from the date of shipment, where it was not issued at the time of exportation through error or omission. Retroactive issue is a repair, not a plan; the plan is the proforma invoice.
When to ask, and what goes on the proforma invoice
The certificate is applied for in China, by the exporter, against the commercial invoice and packing list, for one consignment. That sets the timing: it cannot be issued before the goods and the invoice exist, and it should not be an afterthought once they do. On our orders the request goes in four places.
| Step | Where the certificate appears | What you do | What we do |
|---|---|---|---|
| Enquiry | Row 8 of our enquiry sheet: destination port, Incoterm and importer of record | Add the form your broker named, or “non-preferential certificate required”, or “none” | Quote on that basis; the form is listed with the documents on the offer |
| Proforma invoice | The document list, next to the Incoterm and the lead time | Check the form name and the issuing body are written, and that the exporter entity matches the one you verified | Issue the proforma invoice with the form named; our standing terms are on the supplier profile |
| After pre-shipment inspection, before the vessel sails | The application, made against the commercial invoice and packing list | Confirm the invoice description and HS code with your broker; a correction after issue is a reissue | Apply with the invoice, the packing list and the HS code the broker settled |
| Shipping documents | With the commercial invoice, packing list, bill of lading and certificate copies | Pass the set to the broker; for Singapore the preferential certificate reaches the importer electronically and is retrieved by reference number | Send the certificate with the document set; shipments leave from Shanghai Port under EXW, FOB or CIF as agreed |
This table answers where in the order the certificate is requested and issued. It does not answer what else is in the document set or who pays for which leg; that is on the pre-shipment inspection page, which lists the shipping documents by Incoterm.
Decision rule. IF the proforma invoice does not name the certificate and the issuing body, THEN have it added before you pay the deposit, BECAUSE the deposit fixes the scope and a certificate added later is a goodwill item, not a contract item. The same applies to the HS code: the one written on the commercial invoice is the one that goes on the certificate, so settle it with the broker before the invoice is cut, not after.
Checking a certificate you have been sent: five places
A certificate of origin is a short form, and the five fields below are where a mismatch costs a preference or a clearance. Check them against the proforma invoice and the broker’s classification before the goods arrive.
| Field | Check it against | What a mismatch means |
|---|---|---|
| Exporter name and address | The entity on the proforma invoice and the business license you verified | Another entity exported the goods; the preference is claimed in that entity’s name and the warranty chain runs through a different company. How to match entities by credit code is on our manufacturer verification page |
| Invoice number and date | The commercial invoice in the shipping set | The certificate covers a different consignment; customs will not pair it with your entry |
| HS code | The code your broker settled for the entry | The preference claim is refused for that line, or the entry is queried; reissue before entry where time allows |
| Description and quantity | Model numbers and unit count on the packing list | Part of the consignment is uncovered; spare cells or a power supply shipped with the units need their own line |
| Certificate number and issuing body | The issuer’s lookup: the China Customs origin platform by certificate number, or the CCPIT system; the ICC also runs a verification site for chamber-issued certificates | The certificate cannot be found, or shows as cancelled; stop and ask the exporter before the entry is lodged |
The China Customs platform shows a cancelled status on its face when a certificate has been withdrawn, so a lookup that returns “cancelled” is an answer, not an error. For a certificate issued through a chamber, the ICC lists its member chambers’ verification site on the page linked above.
Scope and limits
This page is a working sheet for one question: which certificate of origin to ask for, and whether it changes the duty on an electrostatic precipitator line. Its limits are the following, each with what to do instead.
- It does not state your duty rate. The rates quoted are read from the UK, Australian and US tariff pages on 10 October 2026 and are given with the line they belong to; the rate on your entry is the one your broker reads on the day. Where we did not read the page, the row says so. Action: have the broker read the line before the proforma invoice is signed.
- It does not classify the unit. An in-duct ESP, an ESP hood with its own fan and a three-stage ecology unit can land under different headings, and the certificate carries whichever code the broker settles. Action: read the HS code page and settle the code first.
- It does not say whether a certificate must be attested or legalised. Some importers’ authorities ask for a non-preferential certificate with attestation. Action: ask the broker, and put the answer on row 8 of the enquiry.
- It does not follow agreements as they change. The China-GCC FTA is listed as under negotiation; the China-Maldives FTA entered into force on 1 January 2025; the ASEAN-China procedures have been revised since the Annex quoted here was posted. Action: treat the sheet as the list of questions, and the broker’s reading as the answer.
- It does not cover a unit that is not of Chinese origin. A kitchen ESP bought from a trader and shipped from a third country carries that country’s origin paper, and the direct consignment rule can break the claim. Action: verify the exporter entity and the shipping route before paying.
What changes the answer: a new destination port or importer of record (new row, new broker reading); a change of classification after a ruling; a transit through a non-member country; spare parts or consumables added to the consignment after the application; and any agreement entering into force or being upgraded after the date on this page.
Buyer record and key takeaways
Before the proforma invoice is signed, your file should hold:
- The destination port, the importer of record and the broker’s name, as on row 8 of the enquiry sheet.
- The HS code the broker settled for the in-duct unit, and separately for an ESP hood, a UV module, carbon media or spare cells if they ship together.
- The broker’s answer to two questions: is an agreement with China in force for my country, and does my line still carry a rate above the preferential one.
- The form name and the issuing body, or “non-preferential certificate, attested or not”, or “none”, written on the enquiry and then on the proforma invoice.
- After shipment: the certificate number, and the result of the lookup on the issuer’s platform, matched to the invoice number, the exporter entity, the HS code and the packing list.
Key takeaways
- Which electrostatic precipitator certificate of origin: the one named by the agreement in force between China and your country and the rate left on your line, not the supplier’s habit.
- Where it pays: Australia under ChAFTA, the ASEAN markets under Form E or RCEP, Korea, Pakistan, Maldives and the APTA members line by line, not every port that asks for a certificate.
- Where it does not: the UK, the EU, the US, Canada and the GCC with no agreement in force, and Singapore and Hong Kong where an ESP is not dutiable, not “every Chinese shipment needs Form E”.
- When: named on the enquiry and the proforma invoice, applied for against the commercial invoice before the vessel sails, not requested after arrival.
- What to check: exporter entity, invoice number, HS code, description and the issuer’s lookup, not the stamp alone.
Frequently asked questions
- Do I need a certificate of origin to import an electrostatic precipitator from China?
- Only if your broker says clearance at your port requires one, or if an agreement between China and your country is in force and your tariff line still carries a rate above the preferential one. In the UK, the EU, the US, Canada and the Gulf states no agreement with China is in force, so a certificate there is a clearance document, not a duty saving. In Singapore and Hong Kong an ESP is not a dutiable good. Ask the broker both questions before the proforma invoice is signed.
- Who can issue a certificate of origin in China?
- China Customs, through its origin e-government platform, and the China Council for the Promotion of International Trade through its online certification system. Each trade agreement names the authority it accepts: the ASEAN-China rules say the certificate is issued by the government authorities of the exporting Party. A certificate is applied for by the exporter against the commercial invoice, for one consignment, and can be looked up by its number on the issuer’s platform.
- What is Form E, and does it apply to my ESP?
- Form E is the preferential certificate of origin under the ASEAN-China Free Trade Area. It applies when the importing country is an ASEAN member, the unit meets the origin rule in Annex 3 of the agreement, and the national line still carries a rate to lower. For Singapore it is one of three forms Singapore Customs lists, but an electrostatic precipitator is not a dutiable good there, so it lowers nothing. For Malaysia, Vietnam, Thailand, Indonesia and the Philippines, ask your broker whether Form E or the RCEP form gives the lower rate on your line.
- Does a certificate of origin lower US duties on a Chinese electrostatic precipitator?
- No. There is no agreement in force between China and the United States, so there is no preferential certificate to claim. The general rate on subheading 8421.39.01 is Free, and Chapter 99 of the tariff adds duties on products of China; heading 9903.88.03 reads “the duty provided in the applicable subheading + 25%” for the articles it lists. Origin is declared on the entry and is what triggers those headings; your broker checks which apply on the day.
- Can you send the certificate of origin before shipment?
- The certificate is applied for against the commercial invoice and packing list, so it is issued when the consignment and the invoice exist, after the pre-shipment inspection and before the vessel sails. Name the form on the enquiry so it is written on the proforma invoice, and settle the HS code with your broker before the invoice is cut. The certificate then travels with the shipping documents; for Singapore it is transmitted electronically and retrieved by reference number.
Shipping an ESP to a port where the form matters?
Send us the destination port, the importer of record and the form your customs broker named, together with the airflow or the model you are looking at. You get back a proforma invoice with the Incoterm, the lead time and the certificate of origin listed as a document, within 24 hours on business days, and the certificate itself with the shipping documents when the order ships from Shanghai Port.
If the HS code is not settled yet, start with the classification page; the certificate carries whichever code the broker settles.
Why we write this. We issue the proforma invoice and prepare the shipping documents for every electrostatic precipitator order, and the certificate of origin is the document buyers ask about latest and need earliest. The questions behind this page are whether a certificate is needed at all, who issues it, and whether Form E applies to a kitchen ESP. This page answers them by destination. It does not size or configure equipment; sizing and quotation live on the product pages.
Scarlett handles orders at Polygee from the proforma invoice to the shipping documents, along with export inquiries, dealer relationships and commercial terms. Polygee, founded in 2004, manufactures the in-duct electrostatic precipitators, kitchen ESP hoods and kitchen ecology units named here and has exported to 50 countries. This page reads public agreement texts and tariff pages on the dates given; it is not a customs ruling, a tariff opinion or legal advice.
References & further reading
- Origin systems: World Customs Organization, Origin overview (preferential and non-preferential origin). wcoomd.org
- Certificate types: International Chamber of Commerce, Certificates of Origin (non-preferential and preferential certificates; verification site). iccwbo.org
- ASEAN-China rules: Annex 3, Rules of Origin for the ASEAN-China Free Trade Area, with the Operational Certification Procedures, as posted by the ASEAN Secretariat (2021 file). Rules 2, 4, 8 and 12, and procedure Rules 1 and 10, are read from this text. asean.org (PDF)
- Singapore: Singapore Customs, Claiming Preferential Tariff Treatment for Dutiable Imports, last updated 18 February 2026 (ACFTA Form E, CSFTA PCO and RCEP Form RCEP transmitted electronically from China). customs.gov.sg
- United Kingdom: UK Integrated Online Tariff, commodity 8421 39 25 90 (third-country duty 0.00%) and 8414 60 00 00 (2.00%), read 10 October 2026. trade-tariff.service.gov.uk
- Australia: Australian Border Force, Working Tariff Schedule 3 Chapter 84 (8421.39.90, general rate 5%) and Schedule 12, ChAFTA rates (“all rates are Free” except the listed subheadings), read 10 October 2026. abf.gov.au (Schedule 3) · abf.gov.au (Schedule 12)
- United States: Harmonized Tariff Schedule of the United States, subheading 8421.39.01 and heading 9903.88.03, read 10 October 2026. hts.usitc.gov
- Hong Kong: Customs and Excise Department, Types and Duty Rates of dutiable commodities. customs.gov.hk
- Issuers in China: China Customs origin e-government platform (origin.customs.gov.cn) and the CCPIT certificate of origin system (co.ccpit.org).
- Named, not linked: China’s Ministry of Commerce FTA network pages for the China-GCC FTA (under negotiation), the China-Korea and China-Australia FTAs (in force 20 December 2015) and the China-Maldives FTA (in force 1 January 2025), read 10 October 2026; the Australian Department of Foreign Affairs and Trade pages on ChAFTA certificates and declarations of origin; the Asia-Pacific Trade Agreement text held by UNESCAP; the RCEP Secretariat (rcepsec.org) for the list of RCEP Parties.
Related reading
- Electrostatic precipitator HS code: where an in-duct ESP, an ESP hood and an ecology unit sit in the tariff, and what to give your broker; the code on the certificate is the one settled there.
- Electrostatic precipitator pre-shipment inspection: the twelve checks before the balance, and the shipping document set the certificate travels with.
- Electrostatic precipitator quotation comparison: the sixteen lines that put three offers on one basis; the document list, with the certificate, is one of them.
- How to verify a Chinese ESP manufacturer: matching the exporter on the certificate to the entity on the license and the proforma invoice.