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Overview

A global company with over 120 years history

Established in 1897
We started manufacturing from the age of horse-drawn carriages and have grown into a huge company with more than 280,000 employees around the world.
Sumitomo Electric has extensive business operations in five industries: Automotive, Infocommunications, Electronics, Energy and Environment, Industrial Materials.

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Overview of Group Company

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S.E.I. Thai Holding Co., Ltd.
54 B.B. Building, 20th Floor, Room 2004-2006, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok, 10110 Thailand
Sumitomo Electric (Thailand) Ltd.
54 B.B. Building, 15th Floor, Room 1503-1506, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok 10110, Thailand
Automotive
SEI Thai Electric Conductor Co., Ltd.
7/414 Moo. 6, Mabyangporn, Pluakdaeng, Rayong 21140 Thailand
Environment & Energy
Sumitomo Electric Wintec (Thailand) Co., Ltd.
649 Bangpoo Industrial Estate, Soi 1B, Moo. 2, Sukhumvit Road, Bangpoomai, Muang Samutprakarn, Samutprakarn 10280 Thailand
Environment & Energy
A.L.M.T. (Thailand) Co., Ltd.
Main Office 90/2 Moo. 9, Wellgrow Industrial Estate, Bangna-Trad Road, Bangwua, Bangpakong, Chachoengsao 24180 Thailand Factory 567 Mooban Bannaklang, Moo. 1, Naklang, Soongnuen, Nakhonratchasima 30380 Thailand
Industrial Materials
Sumitomo Electric Hardmetal (Thailand) Ltd.
54 B.B. Building, 10th Floor, Room 1012-1013, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok, 10110 Thailand
Industrial Materials
Sumitomo Electric Hardmetal Manufacturing (Thailand) Ltd.
102 Moo. 9, Wellgrow Industrial Estate, Bangna-Trad Road, Bangwua, Bangpakong, Chachoengsao 24180 Thailand
Industrial Materials
Sumitomo Electric Sintered Components (Thailand) Co., Ltd.
700/471 Moo. 7, Amata Nakorn Industrial Estate, Donhua-Roh, Muangchonburi, Chonburi 20000 Thailand
Industrial Materials
Sumiden Steel Wire (Thailand) Co., Ltd.
7/325 Moo. 6, Amata city Rayong Industrial Estate, Mabyabgpom, Pluakdaeng, Rayong 21140 Thailand
Industrial Materials
SEWS-Components (Thailand) Ltd.
7/129 Moo. 4, Amata City Industrial Estate, Mabyangporn, Pluakdaeng, Rayong 21140 Thailand
Automotive
SEWT Korat Ltd.
108 Moo. 15, Thong Chai Nuea, Pak Thong Chai, Nakhonratchasima 30150 Thailand
Automotive
SEWS Asia Technical Center
1778 Summer Hub, 4th - 5th Floor, Sukhumvit Road, Prakhanong, Klongtoey, Bangkok 10110 Thailand
Automotive
Sumitomo Electric Wiring Systems (Thailand), Ltd.
7/125 Moo. 4, Amata City Industrial Estate, Mabyangporn, Pluakdaeng, Rayong 21140
Automotive
SEAPS (THAILAND) Co., Ltd.
33/4 The 9th Towers, Grand Rama 9, Tower B, 25th Floor, Rama 9 Road, Huaykwang, Huaykwang, Bangkok 10310 Thailand
SWS Sales & Marketing (Thailand) Co., Ltd.
33/4 The 9th Towers, Grand Rama 9, Tower A, 15th Floor, Rama 9 Road, Huaykwang, Huaykwang, Bangkok 10310 Thailand
Automotive
SEWT Kanchanaburi Ltd.
188 Moo. 9, Pangtru, Thamuang, Kanchanaburi 71110 Thailand
Automotive
Sumiden International Trading (Thailand) Co., Ltd.
Main Office 54 B.B. Building, 18th Floor, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok 10110 Thailand Branch 55/9 Moo. 3, Sattahip, Sattahip, Chonburi 20180 Thailand
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SEWT Korat Ltd.
108 Moo. 15, Thong Chai Nuea, Pak Thong Chai, Nakhonratchasima 30150 Thailand
Automotive
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A.L.M.T. (Thailand) Co., Ltd.
Main Office 90/2 Moo. 9, Wellgrow Industrial Estate, Bangna-Trad Road, Bangwua, Bangpakong, Chachoengsao 24180 Thailand Factory 567 Mooban Bannaklang, Moo. 1, Naklang, Soongnuen, Nakhonratchasima 30380 Thailand
Industrial Materials
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SEI Thai Electric Conductor Co., Ltd.
7/414 Moo. 6, Mabyangporn, Pluakdaeng, Rayong 21140 Thailand
Environment & Energy
Sumitomo Electric Sintered Components (Thailand) Co., Ltd.
700/471 Moo. 7, Amata Nakorn Industrial Estate, Donhua-Roh, Muangchonburi, Chonburi 20000 Thailand
Industrial Materials
Sumiden Steel Wire (Thailand) Co., Ltd.
7/325 Moo. 6, Amata city Rayong Industrial Estate, Mabyabgpom, Pluakdaeng, Rayong 21140 Thailand
Industrial Materials
SEWS-Components (Thailand) Ltd.
7/129 Moo. 4, Amata City Industrial Estate, Mabyangporn, Pluakdaeng, Rayong 21140 Thailand
Automotive
Sumitomo Electric Wiring Systems (Thailand), Ltd.
7/125 Moo. 4, Amata City Industrial Estate, Mabyangporn, Pluakdaeng, Rayong 21140
Automotive
Sumiden International Trading (Thailand) Co., Ltd.
Main Office 54 B.B. Building, 18th Floor, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok 10110 Thailand Branch 55/9 Moo. 3, Sattahip, Sattahip, Chonburi 20180 Thailand
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S.E.I. Thai Holding Co., Ltd.
54 B.B. Building, 20th Floor, Room 2004-2006, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok, 10110 Thailand
Sumitomo Electric (Thailand) Ltd.
54 B.B. Building, 15th Floor, Room 1503-1506, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok 10110, Thailand
Automotive
Sumitomo Electric Wintec (Thailand) Co., Ltd.
649 Bangpoo Industrial Estate, Soi 1B, Moo. 2, Sukhumvit Road, Bangpoomai, Muang Samutprakarn, Samutprakarn 10280 Thailand
Environment & Energy
Sumitomo Electric Hardmetal (Thailand) Ltd.
54 B.B. Building, 10th Floor, Room 1012-1013, Sukhumvit 21 Road (Asoke), North Klongtoey, Wattana, Bangkok, 10110 Thailand
Industrial Materials
Sumitomo Electric Hardmetal Manufacturing (Thailand) Ltd.
102 Moo. 9, Wellgrow Industrial Estate, Bangna-Trad Road, Bangwua, Bangpakong, Chachoengsao 24180 Thailand
Industrial Materials
SEWS Asia Technical Center
1778 Summer Hub, 4th - 5th Floor, Sukhumvit Road, Prakhanong, Klongtoey, Bangkok 10110 Thailand
Automotive
SEAPS (THAILAND) Co., Ltd.
33/4 The 9th Towers, Grand Rama 9, Tower B, 25th Floor, Rama 9 Road, Huaykwang, Huaykwang, Bangkok 10310 Thailand
SWS Sales & Marketing (Thailand) Co., Ltd.
33/4 The 9th Towers, Grand Rama 9, Tower A, 15th Floor, Rama 9 Road, Huaykwang, Huaykwang, Bangkok 10310 Thailand
Automotive
SEWT Kanchanaburi Ltd.
188 Moo. 9, Pangtru, Thamuang, Kanchanaburi 71110 Thailand
Automotive

About us

Over 120 Years of
Sumitomo Electric

Since the Company’s founding in 1897, Sumitomo Electric Industries, Ltd. has continued to take on challenges to achieve a prosperous and dream-filled future. In late 19th century, Japan was still heavily dependent on expensive imported electric cables.

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PRESIDENT MESSAGE

PRESIDENT MESSAGE Osamu Inoue

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