Somboon Advance Technology Public Co., Ltd.

Company Profile



215 Moo 2, Debaratna Road, Bangchalong, Bangplee, Samutprakarn 10540, Thailand

Business Overview

-The Company is Thailand’s leading automotive parts manufacturer. It manufactures axle shafts, disc brakes, brake drums, springs, camshafts, cases, exhaust manifolds, and flywheels for passenger vehicles and commercial vehicles, as well as agricultural machinery.

-On 1 January 2022, the Company has restructured business to be a holding company and has transferred its axle shaft production line to its subsidiary, Somboon Forging Technology Co., Ltd. The purpose is to effectively implement the Company's plan and to increase flexibility in business expansion.

-The Company is organized into two reportable segments based on the products provided as follows:

  • Axles and trunnion shafts
  • Other auto parts and others


Share of major products in the Thai market

 Product FY ended Dec. 31, 2022 FY ended Dec. 31, 2021 FY ended Dec. 31, 2020
Rear axle shafts 84 73 73
Disc brakes and drum brakes 20 23 23
Hubs 17 13 13


-The Company is listed on the Stock Exchange of Thailand. (As of Mar. 9, 2023)
Largest shareholder accounts Shareholding (%)
Somboon Holding Company Limited 29.92
Kitaphanich Family 13.36
Thai NVDR Company Limited 8.86
Krungsri Dividend Stock Fund 1.92
KKP Long Term Equity Dividend Fund 1.75
BBHISL Nominees Limited 1.20
Allianz Ayudhya Assurance PCL. 1.03
Nortrust Nominees Ltd-CL AC 0.95
KKP Equity Retirement Mutual Fund 0.88
Individual Shareholder 0.80
Total 60.67


-Axle shafts
-Inner shafts
-Trunnion shafts
-Flange companions
-Hub front axles
-Rear end housings
-Cylinder disc brakes
-Car gears
-Disc brakes
-Drum brakes
-Exhaust manifolds
-Front axle assemblies
-Mounting cylinder disc brakes
-Hardening camshafts
-Coil springs
-Leaf springs
-Stabilizer bars


1962 Established Somboon Spring Ltd.
1975 Established Somboon Malleable Iron.
1977 Established Bangkok Spring Industrial.
1995 Established Somboon Advance Technology.
2002 Commenced supplying for Toyota.
2005 Listed on the Stock Exchange of Thailand.
2007 Acquired International Casting Products by 100% shareholder.
2011 Established Somboon Forging Technology Co., Ltd.
Aug. 2017 Has set up a joint venture with a German company, Mubea Engineering AG, the affiliate of Mubea Group, to manufacture vehicle springs.
May 2022 Formed a joint venture company called Somboon Tron Energy Co., Ltd. The Company holds 60% share, while 40% held by Tron Energy Technology Co., Ltd.

Supplemental Information 1