THAILANDSICThailand Standard Industrial Classification

TSIC Activity

81292

Specialized interior cleaning activities for buildings

ประกอบกิจการให้บริการ ซ่อมแซม บำรุงรักษา ดูแลเครื่องจักโรงงาน

What this activity covers

Companies provide specialised cleaning services for various building systems and industrial machinery.

  • Window cleaning — Cleaning of windows in buildings
  • Chimney cleaning — Cleaning of chimneys and fireplaces
  • Industrial machinery cleaning — Cleaning of factory and industrial equipment
  • Swimming pool maintenance — Cleaning and upkeep of swimming pools
  • Ventilation duct cleaning — Cleaning of ventilation systems
  • Exhaust system cleaning — Cleaning of exhaust systems in buildings

What companies here also do

Seen in real company registrations under this code — beyond the official definition, so licensing may differ.

  • Sterilisation services — Cleaning and sterilising medical instruments
  • Maintenance services — General maintenance for factory machinery

Not included here

  • Chicken coop cleaning service, animal pens. See activity 01629
  • Maintenance and installation of central heating systems. See activities 33110 and 43222.
  • Cleaning the building when construction is complete. See activity 43309.

Industry at a glance

as of 23 ก.ค. 69

The whole registered industry under this activity, every registration year, from the DBD DataWarehouse.

244
active companies operate here
฿724.4Mregistered capital, combined
฿2.2B
Sector revenue · 2025
+20% since 2023
฿95.8M
Net profit · 2025
126 profitable
202320242025

net profitrevenue

Foreign investment

new registrations · 2026 YTD
0%of new registered capital is foreign-held
฿0 foreign฿23.9M Thai

Almost entirely Thai-held — little foreign capital enters here.

1 of the 5 largest companies here are foreign-owned Thailand subsidiaries.

New in 2026

16+14.3%

registrations, YTD

Registered capital

฿724.4M+6.6%

since year-end

Largest by revenue

Latest filed-year revenue, not a multi-year total

  1. 1Hydrodine Service Co., Ltd.฿285.3M
  2. 2Adong Service Co., Ltd.฿234.6M
  3. 3JS Tech Co., Ltd.฿112.7M
  4. 4Blue Water Proen Co., Ltd.฿107.5M
  5. 5Kotak ITS (Thailand) Co., Ltd.intl฿104.7M

Largest by registered capital

  1. 1Thai Maxwell Industrial Service Co., Ltd.Rayong฿100.0M
  2. 2CHC Chemical Co., Ltd.Rayong฿35.0M
  3. 3Pegasus Neck Co., Ltd.Nakhon Pathom฿30.0M

Source: Department of Business Development DataWarehouse. Financial figures are combined totals of companies that filed statements; revenue and profit shown for the latest three reporting years.

Companies registered since 2022

Browse all

New DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.

95
Registered
since 2022
88
Still active
7
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 22 in 20232026

Largest active companies by registered capital

Source: Department of Business Development (DBD) new-registration records, 2022 to present. Counts cover companies first registered in that window, reflect the latest snapshot load, and may lag the live register.

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