THAILANDSICThailand Standard Industrial Classification

TSIC Activity

29202

Manufacture of trailer and semitrailer

ประกอบกิจการ การผลิตรถพ่วงและรถกึ่งรถพ่วง

What this activity covers

This activity involves the manufacture of trailers and semi-trailers for transporting goods and passengers.

  • Trailers for goods — Manufacture of trailers for transporting goods
  • Semi-trailers — Manufacture of semi-trailers for goods transport
  • Caravan trailers — Manufacture of trailers for passenger transport
  • Tankers — Manufacture of tank trailers for liquid transport
  • Detachable trailers — Manufacture of detachable trailers for various uses

What companies here also do

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

  • Truck body manufacturing — Manufacture of truck bodies and related equipment
  • Modification services — Modification of trailers and trucks
  • Leasing services — Leasing of manufactured trailers and trucks

Not included here

  • Manufacture of trailers and semi-trailers specially designed for agricultural use. See activity 28219.
  • Manufacture of animal-drawn carriages. See activity 30990.

Industry at a glance

as of 23 ก.ค. 69

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

103
active companies operate here
฿29.4Bregistered capital, combined
฿4.0B
Sector revenue · 2025
-77% since 2023
฿154.8M
Net profit · 2025
46 profitable
202320242025

net profitrevenue

Foreign investment

new registrations · 2026 YTD
0%of new registered capital is foreign-held
฿0 foreign฿5.0M Thai

Based on few new registrations this year — read as a rough signal only.

New in 2026

1+0.0%

registrations, YTD

Registered capital

฿29.4B+0.6%

since year-end

Largest by revenue

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

  1. 1D Siam Manufacturing Co., Ltd.฿1.1B
  2. 2U Saha Kit Nong Kha Co., Ltd.฿405.0M
  3. 3Silamas Service Co., Ltd.฿397.2M
  4. 4Steelmer Co., Ltd.฿390.2M
  5. 5Bowell Holdings (Thailand) Co., Ltd.฿305.4M

Largest by registered capital

  1. 1Ch Thawee Public Company LimitedKhon Kaen฿26.7B
  2. 2D Siam Manufacturing Co., Ltd.Rayong฿1.2B
  3. 3Silamas Service Co., Ltd.Samut Prakan฿470.0M

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.

13
Registered
since 2022
11
Still active
2
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 4 in 20222026

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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