CNAE 4329-1/05 · Rio de Janeiro
Tratamentos térmicos, acústicos ou de vibração in Rio de Janeiro
306 active companies are headquartered in Rio de Janeiro with this CNAE as their main activity. They represent 8.5% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 3,582
What this list shows
We count each active company once, by its head office in this state and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.
- Companies in Rio de Janeiro
- 306
- 8.5% of Brazil's
- Of every 100 companies in Rio de Janeiro
- 0.0
- do this activity
- Among Brazil's federative units
- 3rd
- by companies in this activity
Active companies in Rio de Janeiro
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 10- SIFC-SERVICOS DE ISOLAMENTO,FUNILARIA E COMERCIO LTDADuque de Caxias (RJ)
- ENOXX SERVICOS LTDARio de Janeiro (RJ)
- L DIAS MANUTENCAO E REPAROS LTDADuque de Caxias (RJ)
- KECRI MONTAGEM E ISOLAMENTO TERMICO LTDAMacaé (RJ)
- A. E. ISOLAMENTOS TRATAMENTOS TERMICOS LTDARio das Ostras (RJ)
- ISOMIX ISOLAMENTO TERMICO E MONTAGEM LTDASão João de Meriti (RJ)
- PLUSTERM PRESTADORA DE SERVICOS E OBRAS LTDASão João de Meriti (RJ)
- HOTWORK BRASIL ENGENHARIA TERMICA LTDAItaguaí (RJ)
- RTC CONSTRUCOES E SERVICOS LTDACampos dos Goytacazes (RJ)
- BRITO SERVICOS DE CONSTRUCAO A SECO LTDARio de Janeiro (RJ)
- JKS ISOLAMENTOS TERMICOS E SERVICOS LTDADuque de Caxias (RJ)
- ISOMIL RIO INDUSTRIA E COMERCIO DE PLASTICOS LTDASão João de Meriti (RJ)
- MND COSTA INSTALACOES LTDANiterói (RJ)
- HDM RIO SERVICO DE ENGENHARIA EM TRATAMENTO TERMICO LTDARio de Janeiro (RJ)
- IBS INDUSTRIA REPAROS E ISOLAMENTOS TERMICOS DE BAUS LTDADuque de Caxias (RJ)
- ARREMATE COMERCIO VAREJISTA DE MATERIAL DE CONSTRUCAO LTDARio de Janeiro (RJ)
- ISOMARINS INDUSTRIA E COMERCIO LTDAMacaé (RJ)
- SILENTIUM AMBIENTAL INSTALACOES ACUSTICAS LTDARio de Janeiro (RJ)
- IMPER-VAIN S SERVICOS, COMERCIO E DISTRIBUICAO LTDA.Rio de Janeiro (RJ)
- BANDGESSO E DRYWALL LTDARio de Janeiro (RJ)
- BRITO SOLUCOES EM ACUSTICA LTDARio de Janeiro (RJ)
- THERMO BRASIL ISOLAMENTO TERMICO E REFRIGERACAO LTDASão Gonçalo (RJ)
- ALBERNAZ E MARTINS ENGENHARIA LTDARio das Ostras (RJ)
- F.B. SOLUCAO ACUSTICA COMERCIO LTDASão Gonçalo (RJ)
- HOT STEEL TRATAMENTOS TERMICOS ESPECIAIS LTDADuque de Caxias (RJ)
- MAGER ISOLAMENTO TERMICO COM NANOTECNOLOGIA, COMERCIO E SERVICOS LTDAMacaé (RJ)
- CAREL ISOLAMENTOS TERMO ACUSTICO LTDANiterói (RJ)
- ISOTEC BAU E ISOLAMENTO LTDADuque de Caxias (RJ)
- MACLEN SOLUCOES ESPECIAIS LTDA.Rio de Janeiro (RJ)
- NITEROI PRESTACAO DE SERVICOS LTDASão Gonçalo (RJ)
List limited to 300 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.
How to assess a company's data
When you open a company's record, use these guides to check the data and understand what each field can establish.
- How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
- What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
- How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.
How much the activity weighs
of every 100 active companies, how many do this activity
- Rio de Janeiro0.0
- Brazil0.0
In Rio de Janeiro, the activity weighs what it does in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 36.6% 112
- 2 Duque de Caxias 10.1% 31
- 3 São Gonçalo 7.2% 22
- 4 Campos dos Goytacazes 3.9% 12
- 5 Nova Iguaçu 3.9% 12
- 6 Belford Roxo 2.9% 9
- 7 Cabo Frio 2.6% 8
- 8 Macaé 2.6% 8
- 9 São João de Meriti 2.6% 8
- 10 Itaboraí 2.3% 7
20 more cities
- 11 Magé 7
- 12 Niterói 6
- 13 Volta Redonda 6
- 14 Mesquita 5
- 15 Rio das Ostras 5
- 16 Petrópolis 5
- 17 Barra Mansa 4
- 18 Itaguaí 4
- 19 Queimados 3
- 20 Japeri 3
- 21 Angra dos Reis 3
- 22 Teresópolis 3
- 23 Seropédica 2
- 24 Maricá 2
- 25 Resende 2
- 26 Três Rios 2
- 27 Itatiaia 2
- 28 Armação dos Búzios 1
- 29 Iguaba Grande 1
- 30 Pinheiral 1
Class 4329-1 in Rio de Janeiro
obras de instalações em construções não especificadas anteriormente, by subclass| Subclass | Active |
|---|---|
| 4329-1/01 Instalação de painéis publicitários | 892 |
| 4329-1/02 Instalação de equipamentos para orientação à navegação marítima fluvial e lacustre | 309 |
| 4329-1/03 Instalação, manutenção e reparação de elevadores, escadas e esteiras rolantes | 700 |
| 4329-1/04 Montagem e instalação de sistemas e equipamentos de iluminação e sinalização em vias públicas, portos e aeroportos | 322 |
| 4329-1/05 Tratamentos térmicos, acústicos ou de vibração · this one | 306 |
| 4329-1/99 Outras obras de instalações em construções não especificadas anteriormente | 279 |
What activity 4329-1/05 is
- Os serviços de tratamento térmico, acústico ou de vibração
Frequently asked questions
How many companies have main CNAE 4329-1/05 in Rio de Janeiro?
306 active companies have CNAE 4329-1/05 as their main activity in Rio de Janeiro, according to the Receita Federal's October 2026 publication. That is 0.0 of every 100 companies there, against 0.0 in Brazil.
Which of Rio de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 112, 36.6% of the state's companies in this activity.
Why can this total differ from the companies operating in this state?
This scope counts active companies by their head office and registered main activity. A company may operate in this state through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.
Does active status mean a company is qualified for a contract?
No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.
How we count
Active companies with this as their main activity, counted by head office in Rio de Janeiro.