Industry Code 3530: Steam and hot water supply, air conditioning supply and ice production

Industry Code 3530: Manufacture, distribution of steam, hot water, air conditioning and ice production, updated according to Decision 36/2025/QD-TTg. To learn more about the details of industry code 3530, please refer to this article by VN Law Firm!

1. What is an Industry Classification Code?

Industry classification codes are a series of numbers coded to represent a specific business line. Organizations and individuals, when preparing business registration documents, must use this business industry code table for registration. Level 4 industry codes (with 4 digits) are the codes used for business registration.

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

Example of industry code structure: Taking the example of Food Production:

• Level 1: C (Manufacturing)
• Level 2: 10 (Food processing)
• 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 3530: Manufacture, distribution of steam, hot water, air conditioning and ice production

35301: Manufacture, distribution of steam, hot water and air conditioning

This group includes:

– Production, collection, and distribution of steam and hot water for heating, power supply, and other purposes;

– Production and distribution of cooled air, for example, supplying air conditioning, etc.;

– Production and distribution of chilled water for cooling purposes.

This group also includes: Thermal energy storage.

Exclusions:

– Production of ice from natural water for cooling purposes is classified under group 35302 (Ice production);

– Production of steam, hot water through waste incineration is classified under group 382 (Waste treatment and disposal).

35302: Ice production

This group includes: Production of ice from natural water for cooling purposes.

Exclusions: Production of edible ice is classified under group 10500 (Manufacture of dairy products).

3. Suggestions for recording Industry Code 3530: Manufacture, distribution of steam, hot water, air conditioning and ice production

– When registering a business establishment, when notifying changes to business lines, or when requesting a change to a Business Registration Certificate, the business founder or enterprise selects a four-digit economic sector from the Vietnam Standard Industrial Classification System to record the business lines in the business registration dossier. The business registration agency guides, cross-references, and records the enterprise’s business lines in the National Business Registration Database.

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

Suggestions for recording Industry Code 3530: Manufacture, distribution of steam, hot water, air conditioning and ice production:

Case 1: General

Case 2: Detailed

Case 3: Detailed

Case 4: Detailed

Case 5: Detailed

Case 6: Detailed

Case 7: Detailed

Case 8: Detailed

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

4. Business line change services for companies and enterprises at VN Law Firm

Our business line change services for companies and enterprises at VN Law Firm save clients significant time and effort. At VN Law Firm, you will receive business line change services for companies and enterprises, including:

• Consultation on procedures for changing and supplementing business lines;
• Assisting clients in preparing necessary documents;
• Drafting and submitting dossiers for changing and supplementing the company’s or enterprise’s business lines at the Business Registration Office on behalf of the client;
• Monitoring the dossier, supplementing or amending it (if necessary) as required by the specialist;
• Carrying out procedures to publicize business registration information on the Information Portal;
• Handing over the certificate confirming the change of business lines;
• Guiding clients on necessary procedures after changing business lines…