A cord extension set is a device used to extend the power supply distance from a socket-outlet to an appliance, and is widely utilized in both daily life and production. During operation, this device must carry electrical loads for extended periods and may be subject to continuous bending, pulling, and moving, posing risks of damage or overheating if technical requirements are not met. Therefore, enterprises are mandatory to comply with the Legal Regulations for Extension Cord Sets in Vietnam to ensure consumer safety and to be permitted to circulate products on the market.
To enter the Vietnamese market, manufacturers and importers must strictly follow the Legal Regulations for Extension Cord Sets in Vietnam. These Legal Regulations for Extension Cord Sets in Vietnam have been significantly updated with the issuance of QCVN 25:2025/BKHCN by the Ministry of Science and Technology (MOST). Under the newest Legal Regulations for Extension Cord Sets in Vietnam, all household units with a rated current up to 32 A must undergo evaluation at a designated Testing laboratory. This ensures compliance with TCVN 6188-1:2007 and the specific requirements of TCVN 6188-2-7:2016.
See more: Capacity Profile Of Phuc Gia Laboratory Corporation
Table 1: Testing Requirements for Extension Cord Sets

I. What is a Cord Extension Set?
A cord extension set is an electrical device used to extend the power supply range from a fixed power source to remote appliances. It consists of a flexible electrical cable, a plug for power connection, and one or more socket-outlets to provide power to the consuming equipment. These products are widely used in homes, offices, classrooms, civil constructions, and temporary workspaces where the location of fixed socket-outlets is insufficient for electrical needs.

As these devices frequently conduct electricity continuously and carry loads for extended periods, they pose risks of overheating, voltage drops, short circuits, or electrical hazards if the conductors, plugs, or sockets do not meet technical requirements. Therefore, enterprises importing, manufacturing, or distributing these items must clearly understand the Legal Regulations for Extension Cord Sets in Vietnam to ensure products meet all technical requirements before market introduction.
Table 2: Procedures for Implementing Extension Cord Sets

II. Legal Regulations for Extension Cord Sets in Vietnam
1. Procedures for Implementing Licenses for Extension Cord Sets
a) For Imported Extension Cord Sets
| MANAGING MINISTRY | FOR IMPORTED EXTENSION CORD SETS | |
| Implementing Steps | Authorizing/Implementing Body | |
| MINISTRY OF SCIENCE AND TECHNOLOGY | – Step 1: State control registration (*) | Local Department of Standards, Metrology and Quality / Department of Science and Technology where the declaration is opened |
| – Step 2: Regulation conformity testing | Phuc Gia® | |
| – Step 3: Regulation conformity certification (**) | Phuc Gia® | |
| – Step 4: Submit the certificate of conformity and related documents to the registration authority from Step 1 | The enterprise submits the dossier to the Local Department of Standards, Metrology and Quality / Local Department of Science and Technology where the declaration is opened | |
| – Step 5: Affix the CR conformity stamp (Before circulating on the market) |
The enterprise self-implements after being licensed | |
Note:
(*) Submit online via https://vnsw.gov.vn/
(**) Conformity Certification according to QCVN 25:2025/BKHCN – Certification via Method 1 (typical sample testing); the Certificate is valid for 3 years.
b) For Domestically Manufactured Extension Cord Sets
| MANAGING MINISTRY | FOR DOMESTICALLY MANUFACTURED EXTENSION CORD SETS | |
| Implementing Steps | Authorizing/Implementing Body | |
| MINISTRY OF SCIENCE AND TECHNOLOGY | – Step 1: Regulation conformity testing | Phuc Gia® |
| – Step 2: Regulation conformity certification (*) | Phuc Gia® | |
| – Step 3: Declaration of conformity | Local Department of Standards, Metrology and Quality / Department of Science and Technology (where the business is registered) | |
| – Step 4: Affix the CR conformity stamp (Before circulating on the market) |
The enterprise self-implements after being licensed | |
Note: (*) Conformity Certification according to QCVN 25:2025/BKHCN – Certification via Method 1 (typical sample testing); the Certificate is valid for 3 years.
2. Legal Regulation Documents
| MINISTRY OF SCIENCE AND TECHNOLOGY | |
| Legal Regulation Documents | – Circular No. 02/2017/TT-BKHCN issued by the Ministry of Science and Technology, amending Circular No. 28/2012/TT-BKHCN, providing regulations on the declaration of standard conformity, declaration of regulation conformity, and methods for assessing conformity with standards and technical regulations;
– Circular No. 28/2012/TT-BKHCN dated September 30, 2012, issued by the Ministry of Science and Technology, providing regulations on the declaration of standard conformity, declaration of regulation conformity, and methods for assessing conformity with standards and technical regulations; – Circular No. 01/2025/TT-BKHCN dated February 14, 2025, issued by the Ministry of Science and Technology, promulgating the National Technical Regulation on electrical equipment for household and similar electrical installations (QCVN 25:2025/BKHCN). This circular is a cornerstone of the Legal Regulations for Extension Cord Sets in Vietnam. |
3. Types of Extension Cord Sets within the Scope of Application
| MINISTRY OF SCIENCE AND TECHNOLOGY | |
| Types of Extension Cord Sets within the Scope of Application | Cord extension sets for household use with a rated current not exceeding 32 A and falling under one of the following two HS codes:
▪️8536.90.94 ▪️8536.90.99 |
4. Currently Effective Regulations/Standards
| MINISTRY OF SCIENCE AND TECHNOLOGY | |
| Currently Effective Regulations/Standards | QCVN 25:2025/BKHCN stipulates that cord extension sets for household use with a rated current not exceeding 32 A must meet the technical requirements of the following standards under the Legal Regulations for Extension Cord Sets in Vietnam:
Specifically, in Table C.2, Annex C of QCVN 25:2025/BKHCN, the following testing criteria are required:
|
5. Important Notes in Import, Manufacturing, and Business Policies
| MINISTRY OF SCIENCE AND TECHNOLOGY | |
Important Notes in Import, Manufacturing, and Business Policies |
– Testing and certification must be conducted by a designated, registered, or accredited testing and certification body recognized by the Ministry of Science and Technology.
– Enterprises manufacturing or importing domestic cord extension sets with a rated current not exceeding 32 A, after obtaining regulation conformity certification, must register their Declaration of Regulation Conformity at the local Department of Standards, Metrology, and Quality where their business is registered before circulating products on the market. This process is a critical part of the Legal Regulations for Extension Cord Sets in Vietnam. – Certification according to Method 1: Type testing; the Certificate of Conformity is valid for no more than 3 years. Representative samples are collected by the Certification Body or by the client following the Certification Body’s guidance and then submitted to the Certification Body. – Accurate HS code identification is essential to determine correct tax rates and avoid administrative penalties. – Import tax is a mandatory obligation that must be fulfilled to the State. |
III. PHUC GIA®: COMPREHENSIVE SERVICES FOR EXTENSION CORD SETS IN VIETNAM
| ORD | PHUC GIA® CAPACITY | MINISTRY OF SCIENCE AND TECHNOLOGY |
| 1 | Certification/ Designation | Phuc Gia® has been licensed to perform testing and certification according to QCVN 25:2025/BKHCN, and this license remains valid (Detail) |
| 2 | Quotation and Duration for Tests | The official listed quotation is available here. |
| 3 | Support | – Free 24/7 consultation service;
– Consultancy on product quality improvement. |
| 4 | Contact for Services | For assistance with testing/certification services, please contact:
|
In conclusion, maintaining strict compliance with the Legal Regulations for Extension Cord Sets in Vietnam is the only way to ensure market entry and long-term business success. These Legal Regulations for Extension Cord Sets in Vietnam are now largely defined by the newly issued QCVN 25:2025/BKHCN, which mandates rigorous testing for safety and durability. By adhering to the Legal Regulations for Extension Cord Sets in Vietnam, manufacturers ensure that their products meet the required National Technical Regulations and TCVN standards, specifically TCVN 6188-2-7:2016.
RELATED POSTS
- Guidance on Testing Electrical Socket Outlets According to QCVN 25:2025/BKHCN
- Comprehensive Compilation of Legal Regulations for Electrical Switches
- Comprehensive Compilation of Legal Regulations for Socket Adaptors
- Comprehensive Compilation of Legal Regulations for Extension Cord Sets
- Comprehensive Compilation of Legal Regulations for Electrical Plugs
For more details, please contact us at:
PHUC GIA LABORATORY CORPORATION
PHUC GIA CERTIFICATION CENTER
PHUC GIA INSPECTION TESTING CENTER
Hotline: 0965996696 / 0982996696 / 02477796696
E-mail: lab@phucgia.com.vn
Website: phucgia.com.vn
Working time: Monday to Friday 8:00 – 18:30; Saturday 8:00 – 12:00
