THAILANDSICThailand Standard Industrial Classification

TSIC Activity

71102

Engineering activities and related technical consultancy

ประกอบกิจการ บริการออกแบบ ติดตั้ง ซ่อมบำรุง ซ่อมสร้าง ระบบเครื่องจักรในอาคารโรงงาน ก่อสร้างอาคาร โกดัง และระบบอื่นๆ ทั้งภายใน และภายนอกอาคารโรงงาน

What this activity covers

Companies in this sector provide engineering services, technical consultancy, and project management across various engineering disciplines.

  • Engineering design — Creating designs for industrial plants and processes
  • Technical consultancy — Advising on engineering and industrial production
  • Project planning — Organising and managing engineering projects
  • Building inspection — Assessing construction quality and compliance
  • Surveying and mapping — Measuring and mapping land and structures
  • Construction engineering — Managing construction-related engineering projects
  • Industrial process control — Overseeing machinery and industrial processes

What companies here also do

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

  • Renewable energy systems — Consulting and installing renewable energy solutions
  • Infrastructure inspection — Inspecting and repairing civil engineering structures
  • Electronic component design — Designing and testing electronic devices
  • Automotive consulting — Providing consultancy in the automotive sector

Not included here

  • Research and development activities related to engineering work, see activity 72109
  • Industrial Design View 74109 Activities
  • Environmental Consulting Activities View 74902 Activities
  • Quantity Surveyor Activities View 74902 Activities

Foreign ownership

List 3: Restricted, FBL/BOI route available

Engineering service business

Licensed engineering practice is additionally regulated by the Engineer Act.

FBA B.E. 2542, List 3 (9)Routes: Foreign Business Licence, BOI promotion, US Treaty of Amity

Auto-mapped, verify against the Act. These TSIC mappings are indicative, not legal advice; the schedules of the Foreign Business Act B.E. 2542 are the authority. See the full foreign ownership reference.

Industry at a glance

as of 23 ก.ค. 69

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

7,473
active companies operate here
฿61.1Bregistered capital, combined
฿170.6B
Sector revenue · 2025
+7% since 2023
฿-208680608
Net profit · 2025
3,381 profitable
202320242025

net profitrevenue

Foreign investment

new registrations · 2026 YTD
17%of new registered capital is foreign-held
฿158.9M foreign฿777.1M Thai

Foreigners are actively investing in this activity.

New in 2026

326-14.4%

registrations, YTD

Registered capital

฿61.1B-3.0%

since year-end

Largest by registered capital

  1. 1THAILOR SEMICONDUCTOR CO., LTD.Rayong฿3.0B
  2. 2Dragon Kings Corporation Co., Ltd.Chiang Mai฿2.0B
  3. 3Mermaid Subsea Services (Thailand) Co., Ltd.Bangkok฿1.6B

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.

2,452
Registered
since 2022
2,327
Still active
125
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 639 in 20242026

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.

Emerhub

Restricted activity? There is usually a route.

Emerhub structures foreign-owned companies around FBA restrictions: Foreign Business Licence applications, BOI promotion, and compliant shareholding structures. Talk through your case before you commit to one.

Talk to Emerhub Thailand