UL de México, S.A. de C.V. (UL) has specific procedures required to assess product conformity. They were established based on the Ley Federal sobre Metrología y Normalización (‘LFMN,’ Federal Law on Metrology and Standardization in English), Reglamento (Regulations) thereto, Procedimientos para la Evaluación de la Conformidad (Conformity Assessment Procedures and Policies in English) applicable to each of the standards accredited by UL, Standard NMX-EC-17065-IMNC-2014, and UL’s own requirements.

We offer direct access to these documents through the website of the Secretaría de Economía (DGN) [Department of Economy (Dirección General de Normas (‘DGN,’ Directorate-General for Standards in English)].

Constitucion Política de los Estados Unidos Mexicanos (Mexico’s Federal Constitution)

Article 73. The Congress has the power:

Section XVIII: to establish mints, set conditions for mints, enact rules to determine the relative value of foreign currency and adopt a general system on weights and measures.

Comment: The highlighted text enforces the International System of Units specified in Article 5 of the LFMN.

Ley Federal SOBRE Metrología y Normalización (‘LFMN,’ Federal Law on Metrology and Standardization in English)

This law sets forth in articles:

‘Article 52. Any products, processes, methods, facilities, services or activities shall comply with Normas Oficiales Mexicanas (‘NOMs,’ Official Mexican Standards in English).’

‘Article 53. If a product or service should comply with a certain NOM, similar products to be imported shall also comply with the specifications set forth therein.

For this purpose, products or services to be imported shall have a certificate or authorization from the competent agency to regulate the corresponding product or service, or people accredited and approved by the competent agencies for that purpose, in accordance with provisions herein.

If there is no NOM, competent agencies may require that products or services to be imported bear the international specifications they meet, those of the country of origin or, failing this, those of the manufacturer.’

Comment: These articles therefore establish a binding effect to certify the products for which there is NOM in force that should be implemented.

Ley de Comercio Exterior (Foreign Trade Law)

Ley de Comercio Exterior (Foreign Trade Law) determines, through Article 4, Sections III and IV; Article 5, Section III, and articles contained in Title IV, Chapter II thereof; non-tariff measures (NTMs) regulating and restricting the export and import of goods through agreements issued by Competent Authorities. Articles 17, 17A, 20 and 20A establish the enforceability of LFMN and certificates of conformity issued.

‘Article 17.- Non-tariff measures (NTMs) regulating and restricting the export and import of goods, as referred to in Section III of Article 4, shall be issued by agreement of the Secretaría de Economía (Department of Economy) or, if applicable, jointly with the competent authority. These measures will consist of previous permits, maximum quotas, country of origin marking, certificates, countervailing duties, and other instruments considered appropriate for the purposes hereof.’

Additionally, Articles 26 and 27 establish the enforceability of NOMs and classification of goods through tariff classification number.

‘Article 26.- In any case, import, circulation or transit of goods will be subject to NOMs in accordance with the applicable law. Provisions for standardization of import, circulation or transit of goods other than NOMs may not be laid down. Goods subject to NOMs shall be identified in terms of their tariff classification number and corresponding nomenclature according to the respective tariff.

The Secretaría de Economía will define the NOMs to be enforced by customs authorities at the point of entry of goods into the country.’

Comment: Ley de Comercio Exterior, through the aforementioned articles, substantiates Appendix 2.4.1 (Acuerdo de NOMs – NOM Agreement) to the Acuerdo por el cual la Secretaría de Economía Emite Reglas y Criterios de Carácter General en Materia de Comercio Exterior (Agreement whereby the Department of Economy issues General Rules and Criteria on Foreign Trade), in which applicable products and regulatory documents are identified through their tariff classification number.

Ley Aduanera (Customs Law)

The Ley Aduanera (Customs Law), in Article 36, Section I, letter (c) and Section II, letter (b), lays down the way in which compliance with non-tariff regulations and restrictions at the entry/exit point in the country in the case of import or export of goods should be proved.

Comment: the Certificate of Conformity issued by Product Certification Bodies (PCBs) is an accepted document for the verification of non-tariff regulations and restrictions. It shall be attached to and submitted with the corresponding pedimento aduanero (customs declaration).

Ley Federal de Protección al Consumidor (‘LFPC,’ Federal Consumer Protection Law in English).

Procuraduría Federal de Protección al Consumidor (‘Profeco,’ Federal Consumer Protection Agency) is the unit that has the power, in accordance with this law, to:

‘ARTICLE 96. Procuraduría Federal del Consumidor (Profeco), in order to implement and enforce the provisions herein and in LFMN, if it is not the responsibility of another agency, will perform the required surveillance and verification in places where products or goods, including those in transit, are managed, stored, transported, distributed or expended, or in places where services are rendered.

For verification and surveillance as referred to in the paragraph above, Profeco shall act ex officio as provided herein and in the terms of the procedure provided for in the Ley Federal de Procedimiento Administrativo (Federal Law on Administrative-Law Procedure), and as provided for in LFMN in the case of verification of compliance with NOMs.’

Comment: Profeco may verify the product at the point of sale, manufacture or distribution, in order to verify compliance with NOMs, either with respect to product or commercial information. Such a compliance is denoted by submitting the Product Conformity Certificate (PCC) issued by UL or any other accredited and approved certification body and, in the case of commercial information, by submitting the opinion or proof issued by an accredited Verification Unit.

Reglamento de la Ley Federal sobre Metrología y Normalización (‘RLFMN,’ Regulations to the Federal Law on Metrology and Normalization in English)

‘ARTICLE 50. Compliance with commercial information requirements contained in NOMs is not subject to certification. Therefore, the importer, producer, manufacturer, marketer or service provider is responsible for their products to meet the requirements laid down therein. … Producers, manufacturers, importers, marketers or service providers may use accredited and approved verification unit services to obtain a certificate of conformity or compliance opinion proving they meet the requirements set out in NOMs for commercial information. Such documents shall be valid before the competent authorities.’

Comment: regardless of safety standards, NOM for commercial information applicable to electrical and electronic products is:

Norma NOM-024-SCFI-1998Información comercial para empaques, instructivos y garantías de los productos electrónicos, eléctricos y electrodomésticos (Standard NOM-024-SCFI-1998 ‘Commercial Information on Packing, Instruction Manuals and Warranties for Electronic, Electrical and Household Appliance Products’).”

Acuerdo de Norma Oficial Mexicana (Official Mexican Standard Agreement – NOM Agreement)

Appendix 2.4.1 (NOM Agreement) to the Acuerdo por el que Secretaría de Economía Emite Reglas y Criterios de Carácter General en Materia de Comercio Exterior, lays down through Article 5 the following (literal quote translated):

‘Importers of goods listed in Articles 1, 2 and 8 of this

Acuerdo (Agreement) shall attach to the customs import declaration at the time the product is brought into the country the original or a simple copy of the document or NOM certificate issued by the competent agency or accredited certification bodies and, if applicable, approved in terms of LFMN, or other documents expressly established by NOMs in order to prove compliance.’

Comment: this agreement is a useful tool to define, according to the tariff classification assigned to the product, the NOMs to be complied at the time the product is brought into the country and during its marketing.

Políticas y Procedimientos para la Evaluación de la Conformidad (Conformity Assessment Procedures and Policies)

The Reglamento de la Ley Federal sobre Metrología y Normalización (‘RLFMN,’ Regulations to the Federal Law on Metrology and Standardization in English) lays down:

‘ARTICLE 80. Conformity Assessment Procedures (CAPs) may be prepared in general or in particular for each NOM and, when required, for Normas Mexicanas (‘NMXs,’ Mexican standards in English). They may include a description of the requirements to be met by users, applicable procedures, technical and administrative considerations, response time, as well as document request forms where the conformity assessment results to be applied are recorded.’

‘ARTICLE 82. Secretaría de Economía will notify the corresponding parties of the CAPS issued by agencies and published in the Diario Oficial de la Federación (‘DOF,’ Federal Official Gazette in English), in accordance with the provisions in the international agreements and treaties to which Mexico is a party.’

Comment: these articles support the different schemes or modalities that UL offers to you at the time of certifying a product, since these schemes are based on:

  • For NOM-001-SCFI and NOM-019-SCFI, Políticas y Procedimientos de la Evaluación de la Conformidad (Conformity Assessment Procedures and Policies) published in the Diario Oficial de la Federación on October 24, 1997 and amended in publications on February 29,2000 and May 24, 2000, December 10, 2001, July 5, 2002, and July 27, 2004.
  • For NOM-014-ENER-2004, Procedimiento de Evaluación de Conformidad de la Norma Oficial Mexicana (Conformity Assessment Procedure for Official Mexican Standard in English), published on December 7, 2007.
  • For other NOMs, within the certification body’s accredited and approved scope, Procedimientos de Evaluación de la Conformidad (‘CAPs,’ Conformity Assessment Procedures) contained in each of these standards

These policies set out the general provisions under which PCBs may issue the corresponding certificates, as well as delivery times, different Certification Schemes (Modalities), requirements necessary for certification, criteria for f