Industry Code 3520 Manufacture of gas; distribution of gaseous fuels through mains, updated as per Decision 36/2025/QĐ-TTg. To learn more about the details of industry code 3520, please refer to this article by VN Law Firm!
1. What is an industry business code?
Industry business code is a series of numbers encoded to represent a specific business industry. Organizations and individuals, when preparing business registration documents, must use this industry business code list to register. A 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 with 5 levels, from general to specific:
| Level | Name | Code | Quantity |
|---|---|---|---|
| Level 1 | Economic industry level 1 | 1 letter (A to V) | 22 industries |
| Level 2 | Economic industry level 2 | 2 digits (following level 1) | 87 industries |
| Level 3 | Economic industry level 3 | 3 digits (following level 2) | 259 industries |
| Level 4 | Economic industry level 4 | 4 digits (following level 3) | 495 industries |
| Level 5 | Economic industry level 5 | 5 digits (following level 4) | 743 industries |
Example of industry code structure: Taking the food manufacturing industry as an example:
- Level 1: C (Manufacturing)
- Level 2: 10 (Food processing and manufacturing)
- Level 3: 107 (Manufacture of other food products)
- Level 4: 1075 (Manufacture of prepared meals and dishes)
- Level 5: 10751 (Manufacture of prepared meals and dishes from meat)
2. Regulations on Industry Code 3520 Manufacture of gas; distribution of gaseous fuels through mains
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains |
| 35201 | Manufacture of gas |
| 35202 | Distribution of gaseous fuels through mains |
This group includes:
– Manufacture of gas, storage and distribution of natural or synthetic gas to final consumers through a main pipeline system;
– Activities of providing separate gas through gas pipelines, mainly long distances, connecting producers with gas distributors or between urban and rural areas are classified under pipeline transport activities.
Excludes:
– Extraction of natural gas is classified under group 06200 (Natural gas extraction);
– Activities of gas intermediaries or agents arranging the sale of gas through distribution systems operated by others are classified under group 35400 (Activities of electricity and gas intermediaries or agents).
– Activities of coke ovens are classified under group 19100 (Manufacture of coke);
– Manufacture of refined petroleum products is classified under group 19200 (Manufacture of refined petroleum products; manufacture of fossil fuel products);
– Manufacture of industrial gases is classified under group 20111 (Manufacture of industrial gases);
– Wholesale of gaseous fuels is classified under group 4671 (Wholesale of solid, liquid, gaseous fuels and related products);
– Retail of bottled gas is classified under group 4773 (Retail sale of other new goods (except automobiles, motorcycles, mopeds and their parts));
– Direct sale of fuel is classified under group 47300 (Retail sale of automotive fuel) and group 4773 (Retail sale of other new goods (except automobiles, motorcycles, mopeds and their parts));
– Transport of gas through pipelines (long-distance), i.e., not through a distribution network, is classified under group 49400 (Pipeline transport).
– Activities of providing separate gas through gas pipelines, mainly long distances, connecting producers with gas distributors or between urban and rural areas are classified under pipeline transport activities.
35201: Manufacture of gas
This group includes:
– Manufacture of gas for gas supply purposes from coal, agricultural waste, or refuse;
– Manufacture of gaseous fuels with special calorific value from refining, blending, and other production processes of various gases, including natural gas.
Excludes:
– Manufacture of basic organic gases, not used for energy supply through networks, is classified under group 2011 (Manufacture of basic chemicals);
– Manufacture of blast furnace gas is classified under group 24100 (Manufacture of iron, steel, and cast iron);
– Manufacture of landfill gas by-products is classified under group 382 (Waste treatment and disposal).
35202: Distribution of gaseous fuels through mains
This group includes:
– Transport, distribution, and supply of various gaseous fuels through a main pipeline system;
– Gas storage and storage services, such as selling natural gas storage capacity….
– Sale of gas to users through main pipelines;
– Trading of gaseous fuels and gaseous fuel transport capacity, except through intermediaries.
Excludes:
– Activities of coke ovens are classified under group 19100 (Manufacture of coke);
– Manufacture of refined petroleum products and liquefied petroleum gas (LPG) is classified under group 19200 (Manufacture of refined petroleum products; manufacture of fossil fuel products);
– Manufacture of industrial gases is classified under group 20111 (Manufacture of industrial gases);
– Wholesale of bottled gaseous fuels is classified under group 4671 (Wholesale of solid, liquid, gaseous fuels and related products);
– Retail sale of gaseous fuels for motor vehicles and motorcycles is classified under group 47300 (Retail sale of automotive fuel);
– Retail sale of household heating fuels and bottled gaseous fuels is classified under group 4773 (Retail sale of other new goods (except automobiles, motorcycles, mopeds and their parts));
– Transport of gas through pipelines (long-distance), i.e., not through a distribution network, is classified under group 49400 (Pipeline transport).

3. Suggested way to record Industry Code 3520 Manufacture of gas; distribution of gaseous fuels through mains
– When registering for business establishment, when notifying changes to business lines, or when requesting a change to a Business Registration Certificate, the enterprise founder or enterprise selects a four-digit economic industry code from the Vietnam Standard Industrial Classification system to record business lines in the enterprise registration dossier. The business registration authority guides, cross-references, and records the enterprise’s business lines in the National Enterprise Registration Database.
– For conditional business lines stipulated in other legal documents, the business line is recorded according to the provisions in those legal documents.
Suggested way to record Industry Code 3520 Manufacture of gas; distribution of gaseous fuels through mains:
Case 1: General
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains |
Case 2: Detailed
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains Details: Bottling, filling of liquefied petroleum gas (LPG) |
Case 3: Detailed
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains Details: Storage, processing, bottling/filling of gas |
Case 4: Detailed
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains Details: Bottling/filling of liquefied petroleum gas (LPG/gas) (not operating at the head office). |
Case 5: Detailed
| Industry Code | Industry Name |
|---|---|
| 3520 | Manufacture of gas; distribution of gaseous fuels through mains Details: Filling and extraction of gas |
Note: Depending on each specific industry and business line, as well as specific regulations in each locality, it may be necessary to provide details for a Level 4 industry code or commit to operating according to regulations.
4. Services for changing business lines for companies and enterprises at VN Law Firm
Business line change services for companies and enterprises at VN Law Firm help our clients save significant time and effort. With VN Law Firm, you will be provided with business line change services for companies and enterprises, including:
- Consultation on procedures for changing and adding business lines;
- Consulting clients on preparing necessary documents;
- Drafting and submitting the dossier for changing and adding business lines for the company or enterprise on behalf of the client at the Business Registration Office;
- Tracking the dossier, supplementing or amending the dossier (if any) as required by the specialist;
- Performing the procedure to publicize enterprise registration information on the Information Portal;
- Handing over the certificate of change of business lines;
- Guiding clients on necessary procedures to note after changing business lines…
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