Mexico NOM-003/NOM-024 Electrical Compliance Pages on Changzhou Manufacturer Websites: How Should They Be Accepted?

Direct answer: Mexican electrical products are not "CE/UL is enough". NOM-003-SCFI-2014 covers electrical product safety (AC up to 1,000 V, DC up to 1,500 V, with exclusions). Products must be certified by a Mexican accredited/approved product certification body (OCP) and carry the NOM official mark (contraseña oficial) on the product, packaging or label, remaining at least until the consumer purchases it. NOM-024-SCFI-2013 covers commercial information on packaging, instructions and warranties: Spanish, at least product name, manufacturer/importer name and address, country of origin, rated voltage/power/frequency; warranty at least 3 months for electrical/electronic products or 1 year for household appliances, with service locations, spare parts, coverage and procedure. The website page should state product/scope, OCP/certificate, NOM mark, Spanish label/instructions/warranty, importer and records—not "NOM certification = customs clearance guaranteed". Information is current to 2026-11-07. This is a review of public rules and page practice, not legal, certification, testing or customs advice; the DOF/PLATIICA texts, NOMs, OCP and contract control.

This guide is for export, quality, regulatory, procurement and website teams at equipment, electronics/electrical, automotive, medical device, hardware, chemical, packaging and export manufacturers in Changzhou and nearby areas. NOM pages most often miss product scope, OCP/certificate, NOM mark, Spanish label/instructions/warranty and importer, leaving only "we have NOM".

How does this page relate to CE, UL, Korea KC and Saudi SABER pages?

The Mexico NOM page answers "which electrical products are subject to NOM-003/NOM-024, how to certify, and how to write the NOM mark/label/warranty"; the CE page answers EU regulation/DoC; the UL page answers US safety certification; the Korea KC page answers Korean safety certification/confirmation/supplier conformity; the Saudi SASO/SABER page answers SABER product registration/PC/SC. Mexican NOM cannot be replaced by CE/UL/KC; one product may need several countries' compliance, but each has its own procedure, mark and label.

Common breakpoints: mixing NOM-003 and NOM-024 into one certificate; testing without OCP certification; a NOM mark without a certificate basis; an English-only label; missing importer name/address; a warranty without Spanish/service locations/minimum term; product scope/exclusions not checked; assuming CE/UL means customs clearance. Separate "product—NOM-003—OCP—mark—NOM-024—label/instructions/warranty—importer"; then export, quality, regulatory and the customer share one playbook.

This page map is editorial; the DOF/PLATIICA texts, NOMs, OCP and contract control.

Which products does NOM-003 cover, and what is excluded?

Under Chapter 2 of NOM-003-SCFI-2014, it applies to electrical products imported or commercialised in Mexico that use public-service electricity, or other sources such as batteries, accumulators or self-generation, with a rated AC voltage up to 1,000 V and DC up to 1,500 V. Exclusions include products/components subject to a specific safety NOM; equipment for maritime/air transport; equipment for explosive gas/dust atmospheres; separately sold electric motors; products excepted in specific product standards; and some welding/plasma-cutting power sources (internal combustion engine, three-phase supply, a single rated voltage ≥220 V, or multiple voltages not including single-phase ≤127 V, etc.). Scope must be checked against the NOM and the product's intended use, not just "electrical".

Acceptance checks: use; voltage/current; exclusions; specific NOM; import/local sale; relation to NOM-024. Common gaps: applying NOM-003 to an excluded product; treating NOM-003 as all electrical products; missing a specific NOM; wrong voltage range; relying on a customer's verbal description.

Scope/exclusions follow NOM-003-SCFI-2014 Chapter 2; the text and intended use control.

How should NOM-003 safety requirements and product marking be accepted?

Chapter 5 of NOM-003 requires electrical products, when installed, maintained and used for their intended purpose, to provide protection against hazards from the product itself, external influences, safe operation and information/marking. Article 5.1 requires the product to be clearly marked with the manufacturer's or supplier's name, or the manufacturer's/commercial brand; specific technical information and marking location follow the standards and appendices referenced in Chapter 3. Chapter 8 requires products subject to NOM-003 to carry the NOM official mark (contraseña oficial), showing conformity assessment by accredited/approved persons; the mark goes on the product, packaging or both, may be shown on a label, and must remain at least until the consumer purchases it in Mexico. The mark's design/use must comply with the current NOM-106-SCFI.

Acceptance checks: product marking; manufacturer/supplier name or brand; technical information; NOM mark; location; remains until purchase; NOM-106. Common gaps: no manufacturer/supplier name; brand without an entity; wrong NOM mark size/location; mark on packaging but lost before purchase; mark not matching the certificate.

Safety/marking follows NOM-003 Chapters 5/8; the text and NOM-106 control.

How should the OCP certification process be accepted?

Chapter 9 of NOM-003 requires conformity assessment by persons accredited/approved under the Federal Metrology and Standardization Law and its regulations; product certification is performed by a product certification body (OCP) under the procedure. The applicant may be the manufacturer, commercialiser, importer, distributor or supplier. The process includes preliminary information, application, sampling/testing, certification decision, certificate, and follow-up/partial tests; the certificate is issued by an accredited/approved OCP or the Ministry of Economy (SE) and, during its validity, proves conformity with the NOM. The NOM text does not set a uniform certificate term; validity/follow-up frequency depend on the OCP certificate and surveillance rules.

Acceptance checks: OCP accreditation; applicant/holder; product/model/family; sampling/testing; report; certificate; follow-up; validity. Common gaps: testing laboratory not accredited/approved; OCP scope mismatch; certificate model list incomplete; no follow-up; expired certificate; applicant/importer entity mismatch.

Certification follows NOM-003 Chapter 9; the certificate/OCP rules control validity/surveillance.

How should the NOM official mark be accepted?

Chapter 8 of NOM-003 requires products subject to the NOM to carry the NOM official mark (contraseña oficial), showing conformity assessment by accredited/approved persons; the mark goes on the product, packaging or both, may be shown on a label, and must remain at least until the consumer purchases it. The design/use must comply with the current NOM-106-SCFI. The mark is not a self-designed "NOM logo" and not a substitute for CE/UL; the certificate/model/mark must correspond.

Acceptance checks: NOM mark; certificate basis; NOM-106 design; location/size; retention; product/packaging/label; consistency with certificate/model. Common gaps: self-made NOM mark; no certificate; inconspicuous location; product/packaging mismatch; mixed with CE/UL; mark falls off early.

The NOM mark follows NOM-003 Chapter 8 and NOM-106; the current marking rules control.

How should the NOM-024 package label be accepted?

NOM-024-SCFI-2013 covers commercial information on packaging, instructions and warranties of electronic, electrical and household products, their accessories and consumables, for final consumers in Mexico. Article 5.1 requires the packaging/container to be printed or labelled, clearly and legibly, in Spanish, with at least: product graphic or name (unless obvious); domestic manufacturer's or importer's name/company name and address; country of origin legend ("Hecho en.../Manufacturado en..." or similar); applicable rated electrical characteristics (voltage in V, power in W or current in A, frequency in Hz; for systems, at least the main unit); rebuilt/used/second-hand products in at least double the font size. Accessories/consumables must at least include items (a), (b) and (c).

Acceptance checks: Spanish; product name; manufacturer/importer name/address; country of origin; voltage/power/frequency; rebuilt marking; accessories/consumables; consistency with product/certificate. Common gaps: English only; missing importer; incomplete address; no country of origin; wrong electrical data; rebuilt not marked; label inconsistent with packaging/manual.

The package label follows NOM-024 Article 5.1; the text and product type control.

How should instructions and warnings be accepted?

Chapter 6 of NOM-024 requires products at the point of sale to be accompanied by, or have printed on the packaging, the instructions and warnings needed for normal use, conservation and best use, with clear and precise indications, and warnings for safe and reliable handling, at no extra cost. Electronic products, data-processing/IT equipment and accessories may instead have printed quick-start instructions, with detailed information provided on electronic media such as CD/DVD/memory or a website; other products follow Chapter 6. Instructions/warnings should be consistent with the product, label and warranty, and in Spanish per NOM-024.

Acceptance checks: instructions included/printed; normal use/conservation; safety warnings; language; quick-start/electronic instructions; consistency with label/product. Common gaps: no instructions; English only; warnings missing; no quick-start with electronic instructions; instructions not matching the product; not included at the point of sale.

Instructions/warnings follow NOM-024 Chapter 6; the text and product type control.

How should the warranty be accepted?

Chapter 7 of NOM-024 requires the warranty to follow the Federal Consumer Protection Law, be included in the instructions or attached to the product, and at least be in Spanish with: domestic manufacturer's, importer's or commercialiser's name/company name and address; model(s)/brand(s); names and addresses of establishments in Mexico where the warranty can be exercised; where consumers can obtain parts/components/consumables/accessories; warranty duration—at least 3 months for electrical/electronic products and at least 1 year for household appliances; coverage and limitations/exceptions; and the procedure. The warranty should cover all parts and labour; manufacturers/importers must replace defective parts at no cost and include transport costs within their service network.

Acceptance checks: Spanish; entity name/address; model/brand; Mexico service locations; spare-parts location; term (3 months/1 year); coverage/exceptions; procedure; transport costs. Common gaps: no Spanish; service locations outside Mexico; too-short term; "one-year warranty" without scope; no spare-parts location; no importer.

Warranty follows NOM-024 Chapter 7; the text and consumer protection law control.

How should importer, entity and customs be accepted?

The NOM-003 applicant may be the manufacturer, commercialiser, importer, distributor or supplier; NOM-024 requires the domestic manufacturer's or importer's name/address on the label/warranty. For import/commercialisation, customs/regulators may require the NOM certificate/proof of conformity; the page should state who the importer is, who holds the certificate, who is responsible for the label/warranty, and who handles follow-up/changes. Do not treat "the Mexican customer is responsible" as a full transfer of compliance. Specific customs documents/inspection follow Mexican customs, SE/OCP and the broker; the page must not promise "customs clearance guaranteed".

Acceptance checks: importer; certificate holder; manufacturer; OCP; label/warranty responsibility; customs documents; change notice. Common gaps: certificate belongs to the factory but the label to the trader; importer changes without updating; entity name/address mismatch; missing certificate/label discovered at customs; all responsibility pushed to the customer.

Entities/customs follow the NOM and the import arrangement; customs, SE/OCP and the contract control.

How should the NOM page be written?

Suggested content: (1) product/scope (NOM-003 applicable/excluded); (2) OCP/certificate (body, applicant, models, follow-up); (3) NOM official mark (location/retention/NOM-106); (4) NOM-024 package label (Spanish fields); (5) instructions/warnings; (6) warranty (term/service locations/spares/procedure); (7) importer/entity/customs; (8) changes/records; (9) contact/version/update date. The public page explains rules, routes, evidence types and capability; it should not publish customer data, full certificates or prices; do not write "NOM certification = customs clearance guaranteed / one certificate covers everything".

Use consistent English terms (NOM-003-SCFI-2014, NOM-024-SCFI-2013, OCP, NOM official mark, commercial information, warranty, importer, rated voltage) and state the review date. Link to the CE, UL, Korea KC and Saudi SABER pages, but do not present CE/UL as NOM.

This structure is editorial; external statements must be truthful and verifiable, per the NOMs, OCP and contract.

What must not be written?

High-risk claims: "NOM certification = one certificate" (NOM-003 safety + NOM-024 commercial information); "CE/UL is enough to sell" (not a substitute for NOM); "the NOM mark can be printed by anyone" (requires an OCP certificate + NOM-106); "an English label is fine" (NOM-024 requires Spanish); "3 months' warranty for all products" (appliances need at least 1 year); "the service location can be outside Mexico" (NOM-024 requires a Mexico service location); "the importer need not be stated" (label/warranty require it); "customs clearance guaranteed" (cannot promise); "the certificate is valid forever" (per OCP/surveillance). These are inaccurate or misstate scope, mark, label or responsibility.

Safer wording: "This product [model] falls under NOM-003 [applicable/excluded], OCP [body] certificate [number/models]; NOM mark [location]; NOM-024 Spanish label includes [fields]; warranty [term/service/spares]; importer [name/address]; changes/surveillance [process]. The NOM texts, OCP and contract control." External promotion must comply with advertising and fair-competition rules; customer/certificate/price data need authorisation or redaction.

Go-live acceptance checklist

Ten checks: product/scope, OCP/certificate, NOM mark, package label, instructions/warnings, warranty, importer/entity, customs/documents, changes/surveillance, page wording/date. Each needs an owner, evidence and review date. The pass condition is not "the page says NOM", but that a customer or internal team can find the scope, certificate, mark, label, warranty and importer.

Before go-live, run one real export model through: scope → OCP/certificate → NOM mark → NOM-024 label → instructions/warnings → warranty → importer → customs → changes → page wording. Any step that fails is a gap in the page or compliance.

This checklist is editorial; the NOMs, OCP, customs and contract control.

Who is responsible?

The manufacturer is responsible for product safety/marking/technical file; the importer/commercialiser is responsible for the Mexican label/warranty and import compliance; the OCP is responsible for certification/surveillance; the testing laboratory for the test report; the customs broker/forwarder uses the certificate/documents for clearance but does not replace the importer's/manufacturer's responsibility. The page should state who applies, who holds the certificate, who applies the mark, who writes the label/warranty and who handles changes—not "the certification body does everything / the forwarder guarantees clearance".

Acceptance checks: manufacturer; importer; OCP; laboratory; broker; label/warranty responsibility; changes. Common gaps: all responsibility pushed to the forwarder; OCP assumed to handle labelling; importer/manufacturer entity mismatch; no owner for changes; missing certificate discovered at customs.

This responsibility matrix is editorial; the NOMs, OCP, customs and contract control.

Who should read this, who should not, and what decisions does it support?

It suits export, quality, regulatory, procurement and website teams at equipment, electronics/electrical, automotive, medical device, hardware, chemical, packaging and export manufacturers in Changzhou and nearby areas; also companies doing Mexico NOM for the first time, or facing certificate/model changes, label/warranty rejection by customers, or importer requests to update. It does not suit domestic-only sellers, products outside NOM-003 scope, or teams wanting one page to replace testing/certification/customs/legal advice.

Read it if you export to Mexico; the product is electrical/electronic/appliance; NOM-003 and NOM-024 are unclear; OCP/certificate is unclear; the NOM mark/label/warranty is incomplete; the importer/customs is unclear. Skip it if you treat NOM as one certificate, CE/UL as NOM, an English-only label, a warranty below 3 months/1 year, or want the page to guarantee customs clearance. It supports self-review of product/scope, OCP/certificate, NOM mark, package label, instructions, warranty, importer, customs and page wording.

FAQ

What is the relationship between NOM-003 and NOM-024?

NOM-003-SCFI-2014 covers electrical product safety (scope, safety requirements, NOM mark, OCP certification); NOM-024-SCFI-2013 covers commercial information on packaging, instructions and warranties (Spanish label, importer, country of origin, electrical data, warranty). They complement each other and cannot replace each other.

Which products need NOM-003?

Electrical products imported/commercialised in Mexico that use mains electricity or batteries/self-generation, with rated AC voltage up to 1,000 V and DC up to 1,500 V, generally apply; exclusions include products with a specific safety NOM, maritime/air equipment, explosive atmospheres, separate motors and some welding power sources. Check Chapter 2 and the intended use.

How long is a NOM certificate valid?

The NOM-003 text does not set a uniform certificate term; the certificate is issued by an accredited/approved OCP or SE and proves conformity during its validity, with follow-up/partial tests under the OCP rules. The certificate and OCP control the actual validity, surveillance frequency and model changes.

What is the difference between the NOM mark and the NOM-024 label?

The NOM official mark (contraseña oficial) proves NOM-003 conformity assessment; it goes on the product/packaging/label and remains at least until the consumer purchases it, with design/use under NOM-106. The NOM-024 label is commercial information on the packaging (Spanish, importer, origin, electrical data). Both are required but are not the same thing.

What is the minimum warranty?

NOM-024 Chapter 7: electrical/electronic products at least 3 months; household appliances at least 1 year. The warranty must be in Spanish, state the manufacturer/importer/commercialiser name/address, model/brand, Mexico service locations, spare-parts location, coverage/exceptions and procedure, and cover parts and labour.

Who is responsible, the manufacturer or the importer?

The manufacturer is responsible for product safety/marking/technical file; the importer/commercialiser for the Mexican label/warranty/import compliance; the OCP for certification/surveillance; the broker uses the certificate/documents for clearance but does not replace compliance responsibility. The certificate, label, warranty and contract entities should align.

One-sentence takeaway

A Changzhou manufacturer's Mexico NOM page is not about "we have NOM". It should turn NOM-003 scope/OCP/certificate/NOM mark, NOM-024 Spanish label/instructions/warranty, importer/customs and changes into a reviewable checklist—so a customer or internal team can find the scope, certificate, mark, label, warranty and entity.

Method and limitations

This is a review of public rules and page practice, not an audit, certification, testing or customs opinion on any company, product or certificate. No undisclosed customer, price, certificate or test data were used. Processes, document lists, tables and acceptance items are editorial; the latest DOF/PLATIICA texts, NOMs, OCP and contract control. NOM texts/status can change: at review PLATIICA showed NOM-003-SCFI-2014 (DOF 2015-05-28, effective 2016-05-27) and NOM-024-SCFI-2013 (DOF 2013-08-12, effective 2013-10-11) as Vigente; the latest DOF/PLATIICA text, OCP and contract control.

Sources and scope

Information is current to 2026-11-07. The following are Mexican official pages; their text controls.

1. DOF, NOM-003-SCFI-2014 "Productos eléctricos-Especificaciones de seguridad" official text: DOF. Scope/exclusions, safety requirements, NOM mark, OCP certification.
2. SE/PLATIICA, NOM-003-SCFI-2014 status page: PLATIICA. Vigente, DOF publication/effective dates, product scope.
3. DOF/economia-noms, NOM-024-SCFI-2013 official PDF: NOM-024 PDF. Package label, instructions/warnings, warranty requirements.
4. SE/PLATIICA, NOM-024-SCFI-2013 status page: PLATIICA. Vigente, DOF publication/effective dates, scope.