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Industry Code 4211 Construction of railway infrastructure, latest according to Decision 36/2025/QĐ-TTg. To learn more about the details of industry code 4211, please refer to this article by VN Law Firm!

1. What is a business industry code?

Business industry code is a sequence of numbers encoded to represent a specific business line. Organizations and individuals, when preparing business registration documents, must use this business industry code table for registration. The 4-digit industry code (level 4) is the code used for business registration.

The Vietnam Standard Industrial Classification (VSIC) system, issued under Decision 36/2025/QĐ-TTg, has a hierarchical structure of 5 levels, from general to specific:

Level	Name	Encoding	Quantity
Level 1	Level 1 Economic Sector	1 letter (from A to V)	22 sectors
Level 2	Level 2 Economic Sector	2 digits (following level 1)	87 sectors
Level 3	Level 3 Economic Sector	3 digits (following level 2)	259 sectors
Level 4	Level 4 Economic Sector	4 digits (following level 3)	495 sectors
Level 5	Level 5 Economic Sector	5 digits (following level 4)	743 sectors

Example of industry code structure: Taking the food manufacturing industry as an example:

Level 1: C (Manufacturing)
Level 2: 10 (Food processing and preservation)
Level 3: 107 (Manufacture of other food products)
Level 4: 1075 (Manufacture of prepared meals and dishes)
Level 5: 10751 (Manufacture of prepared meat meals and dishes)

2. Regulations on Industry Code 4211 Construction of Railway Infrastructure

Industry Code	Industry Name
4211	Construction of railway infrastructure

Industry Code 4211 Construction of railway infrastructure

This group includes:

– Construction of railways (including railway bridges);

– Construction of railway tunnels;

– Construction of subway lines;

– Construction of electrified railway lines;

– Railway painting;

– Installation of railway barriers, traffic signs and similar items.

Excludes:

– Installation of lighting and electrical signs on traffic roads is classified under group 43210 (Installation of electrical systems);

– Architectural activities are classified under group 71101 (Architectural activities);

– Project management activities related to civil engineering construction works are classified under group 7110 (Architectural and related technical consultancy activities).

Industry code 4211 Construction of railway works

3. Suggested Way to Record Industry Code 4211 Construction of Railway Infrastructure

– When registering a business, when notifying changes to business lines, or when requesting a change to the Enterprise Registration Certificate, the enterprise founder or enterprise selects the four-digit economic sector from the Vietnam Standard Industrial Classification system to record the business lines in the enterprise registration application. The business registration authority guides, verifies, and records the enterprise’s business lines in the National Enterprise Registration Database.

– For conditional business lines specified in other legal normative documents, the business line shall be recorded according to the sector specified in those legal normative documents.

Suggested way to record Industry Code 4211 Construction of Railway Infrastructure:

Case 1: General

Industry Code	Industry Name
4211	Construction of railway infrastructure

Case 2: Detailed

Industry Code	Industry Name
4211	Construction of railway infrastructure Details: Construction of transport infrastructure

Note: Depending on each specific industry code and business line, as well as local regulations, it may be necessary to provide detailed information for the 4-digit industry code or commit to operating according to regulations.

4. Business Line Change Services for Companies and Enterprises at VN Law Firm

Business line change services for companies and enterprises at VN Law Firm save our clients a significant amount of time and effort. With VN Law Firm, you will be provided with business line change services for companies and enterprises, including:

Consulting on the process and procedures for changing or adding business lines;
Advising clients on preparing necessary documents;
Drafting and submitting on behalf of clients the application for changing or adding business lines of the company/enterprise at the Business Registration Office;
Monitoring the application, supplementing or amending the application (if any) as required by the specialist;
Performing the procedure to announce enterprise registration information on the Information Portal;
Handing over the certificate of business line change;
Guiding clients on necessary procedures to note after changing business lines…