1. Sumitomo Electric Wiring Systems (Thailand) Ltd. SEWT Tel: 0-3895-6300  
  2. SEWS Components (Thailand) Ltd. SEWS-CT Tel: 0-3895-6318-23  
  3. Tokai Eastern Rubber (Thailand) Ltd. TER Tel: 0-3889-3557-61  
  4. Inoac Tokai (Thailand) Co., Ltd. ITTC Tel: 0-3521-4949  
  5. Tokai Rubber Compounding (Thailand) Ltd. TRCT    
  6. Sumitomo Rubber (Thailand) Co., Ltd. SRT Tel: 0-3895-3000  
   
  1. Sumitomo Electric Wintec (Thailand) Co., Ltd. WIN-T Tel: 0-2324-0210-3  
  2. SEI Interconnect Products (Thailand) Ltd. SEPT Tel: 0-3846-5805-10  
  3. Thai Copper Rod Co., Ltd. TCR Tel: 0-2385-5003  
  4. Kyoto Electric Wire (Thailand) Co., Ltd. KEWT Tel: 0-2512-1187  
  5. Daikoku Electronics (Thailand) Ltd. DET Tel: 0-2909-7112-3  
   
  1. Nissin Electric (Thailand) Co., Ltd. NET Tel: 0-2529-0968-70  
   
  1. Sumitomo Electric Hard Metal Manufacturing (Thailand) Ltd.            

SHT

Tel: 0-3857-1440-5

 
  2. Sumitomo Electric Sintered Components (Thailand) Co., Ltd.

SEST

Tel: 0-3821-4046-50

 
 

3. A.L.M.T. (Thailand) Co., Ltd.

ALTC

Tel: 0-3852-2291-5

 
  4. Sumiden Hyosung Steel Cord (Thailand) Co., Ltd. (SHST) Tel: 0-3803-6322  
  1. Thai Semcon Co., Ltd.

TSC

Tel: 0-2248-7230

 
  1. Sumitomo Electric (Thailand) Ltd.

SET

Tel: 0-2260-7231-5

 
 

2. S.E.I. Thai Holding Co., Ltd.

STHC

Tel: 0-2260-7783-4

 
  3. SWS Logistic & Marketing (Thailand) Co., Ltd.

SWS-T

Tel: 0-2685-3106-8

 
  4. Sumiden International Trading (Thailand) Co., Ltd. SITT Tel: 0-2260-7059-60  
  5. Techno Associe (Thailand) Co., Ltd. TAT Tel: 0-2361-4491-4  
  6. SEWS Asia Technical Center Ltd. SEWS-ATC Tel: 0-2720-0111  
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