Key Facts
331399 at a Glance
Code 331399
Official title Repair and maintenance of other electronic and optical equipment n.e.c.
Version NIC 2025
Source authority MoSPI
Section C - Manufacturing
Mf
NIC 2025 MoSPI source NIC 331399 - Repair and maintenance of other electronic and optical equipment n.e.c.
NIC 331399 classifies repair and maintenance of other electronic and optical equipment n.e.c. as a final six-digit business activity under Section C and Division 33. Use it when this activity is the main source of...
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Related NIC codes in this branch
Compare nearby hierarchy entries before choosing a code for a registration or business workflow.
Sub-class 331301
Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments.
Sub-class 331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station
Sub-class 331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments
Sub-class 331304 Repair and maintenance of irradiation, electromedical and electrotherapeutic equipment such as magnetic resonance imaging (MRI) equipment, medical ultrasound equipment, pacemakers, hearing aids, electrocardiographs (ECG), electromedical endoscopic equipment, irradiation apparatus
Sub-class 331305 Repair and maintenance of optical instruments and equipment primarily for commercial use, such as binoculars, microscopes (excluding electron and proton microscopes), telescopes, prisms, and lenses (excluding ophthalmic lenses), as well as photographic equipment.
Class 3313 Repair and maintenance of electronic and optical equipment
Group 331 Repair and maintenance of fabricated metal products, machinery and equipment
Division 33 Repair, maintenance and installation of machinery and equipment
Section C Manufacturing
Sub-class 331400 Repair and maintenance of electrical equipment
Sub-class 331299 Repair and maintenance of other machinery n.e.c.
Sub-class 331500 Repair of transport equipment, except motor vehicles
Source Verification for 331399
10 / 10
4 of 4 factors passing
- Verified in official source - Found in NIC_2025.xlsx official MoSPI release dataset.
- International crosswalk available - No official ISIC/NACE/CPC/ISCO correspondence table is bundled in this build input set.
- Migration from previous edition - Legacy migration candidates present from NIC 2008: 3.
- Complete hierarchy chain - All parent levels exist: Section > Division > Group > Class > Sub-class (5 levels).
- Official size/threshold documented - No official code-level size or threshold dataset is included in this source bundle.
- Trade or export crosswalk match - No official NIC-to-HS/export correspondence table is bundled in this source bundle.
- Legacy national crosswalk - Legacy link exists via NIC 2008 converter layer (3 linked legacy codes).
NIC 2008 -> NIC 2025 Mapping for 331399
NIC 2008 links are discovery matches from the local converter layer. Verify final migration decisions against official source documents.
Practical Summary
What Repair and maintenance of other electronic and optical equipment n.e.c. Means Under NIC 2025
NIC 331399 is the final six-digit endpoint for Repair and maintenance of other electronic and optical equipment n.e.c.. It should be selected only when the enterprise's primary business activity matches this title more closely than 331301 Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments., 331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station, 331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments.
How To Choose
When to Choose 331399 Over Nearby Codes
Choose 331399 only when operations, invoices and revenue narrative align with Repair and maintenance of other electronic and optical equipment n.e.c.. If the activity also includes 331301 Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments., 331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station, 331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments, compare those pages before filing.
In this section
331301
Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments.
331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station
331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments
331304 Repair and maintenance of irradiation, electromedical and electrotherapeutic equipment such as magnetic resonance imaging (MRI) equipment, medical ultrasound equipment, pacemakers, hearing aids, electrocardiographs (ECG), electromedical endoscopic equipment, irradiation apparatus
331305 Repair and maintenance of optical instruments and equipment primarily for commercial use, such as binoculars, microscopes (excluding electron and proton microscopes), telescopes, prisms, and lenses (excluding ophthalmic lenses), as well as photographic equipment.
331399
Repair and maintenance of other electronic and optical equipment n.e.c.
Common Questions About NIC 331399
Does NIC 331399 cover manufacturing or only selling the product?
Manufacturing codes apply when the business transforms inputs into a new product through mechanical, chemical, manual or industrial processes. Pure buying and resale should be checked under wholesale or retail trade.
What if the same factory makes several products near NIC 331399?
Choose the Sub-class that best matches the main product line by revenue or production value. If multiple product lines are material, compare 331301 Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments., 331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station, 331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments and document the primary activity before filing.
How do I verify that NIC 331399 is correct before filing?
Check the parent hierarchy, compare 331301 Repair and maintenance of the measuring, testing, navigating and control equipment such as aircraft engine instruments, automotive emissions testing equipment, meteorological instruments, physical, electrical and chemical properties testing and inspection equipment, surveying instruments, radiation detection and monitoring instruments and similar equipments., 331302 Repair and maintenance of systems parameters measurment equipments (Equipments used during realisation and operalisation) of Space craft and its Launch Vehicle & Orbital Station, 331303 Repair and maintenance of Satellite Ground station, Gateway & VSAT, RF and Baseband equipments, and confirm that the official title matches the main revenue activity. For regulated or filing-critical decisions, verify the source row in the MoSPI dataset.
What happens if I use the wrong NIC code in Udyam or MCA registration?
A wrong code can cause mismatched business descriptions, follow-up questions or later compliance cleanup. It is better to compare nearby codes before filing than to correct a weak classification later.
Is there a legacy NIC 2008 equivalent for NIC 331399?
Use the legacy converter only as a migration aid. Old NIC 2008 matches can suggest where to look, but NIC 2025 should remain the primary reference for new code selection.
NIC 2026 guidance
Before you select NIC 331399
NIC 331399 should be selected only when the official title matches the main revenue-generating activity. If the business also trades, transports, processes, installs or supports the same product or service, compare nearby NIC pages before filing. This reduces the risk of choosing a code that describes the product being handled rather than the activity your enterprise actually performs.
Data Source and Verification Date
Source layer
Official NIC 2025 Excel and PDF from MoSPI.
Last verified
2026-04-21 from the generated NIC 2025 source layer used in this build.
Disclaimer
This is an independent reference tool. Verify filing-critical decisions in official sources.