Optoelectronics · Central manufacturing heart
GSEO
GSEO (3406) is a listed Optoelectronics company, registered in Taichung.
Compiled from the Ministry company filing and listed-company records.
Taichung · 3406
玉晶光電股份有限公司 (GSEO), ticker 3406, uniform number 23572557. Chairman 陳天慶. General manager 郭英理. Spokesperson 郭英理. Paid-in capital NT$1,127,430,630. Founded 1990. Listed 2005-12-20. Address No.1, Keya E Rd, Daya District, Taichung City 428Taichung, Taiwan. Phone 04-25667115. Fax 04-25667117. Email mcgwire.chao@gseo.com. Site https://www.gseo.com/tw. Source: Taiwan Stock Exchange open data dated 13 Oct 2026, checked against the twincn listed-company search.
Media
The company's latest public videos, then guest and press videos. They play here when the platform allows an embed.
From the company
youtube · GSEO LED Lighting of GSEO group
GSEO group in English
Guests and press
youtube · 陳惠怡
公司簡介玉晶光電
Main products
- Optoelectronics
Certifications
No certificate is copied here. Ask the company for the original.
Export markets
Listed company. See the annual report.
Questions
Want to ask more? Use the guide at the lower right. On this page I only talk about this company.
What does 玉晶光 actually do?
GSEO (ticker 3406) is filed under Optoelectronics. GSEO (3406) is a listed Optoelectronics company, registered in Taichung. Their own site is https://www.gseo.com/tw.
How do I reach them?
They are registered at No.1, Keya E Rd, Daya District, Taichung City 428Taichung, Taiwan (Taichung). Phone 04-25667115. Fax 04-25667117. Email mcgwire.chao@gseo.com. Or start from their site: https://www.gseo.com/tw. The map pin is only to show the area, not an invitation to walk in.
Who should I ask for?
Chairman 陳天慶. General manager 郭英理. Spokesperson 郭英理. These names are on the exchange filing. Ask the switchboard for them. They may not pick up personally.
How big are they, and when did they list?
Founded 1990. Listed 2005-12-20. Paid-in capital NT$1,127,430,630. Headcount is not on this public table, so I will not guess it.
Can I ask them for a quote or OEM work?
You can ask. This page has no price list and no MOQ. It also does not say whether they take OEM or ODM. Start at https://www.gseo.com/tw.
Can I see their certificates first?
No certificate is shown here. A company filing usually does not attach ISO paperwork. Ask them for the original. I will not assume which ones they hold.
Where is their website, and are they on social?
Their site is https://www.gseo.com/tw. The site does not list a social account, so I will not guess one. The logo is the one on their site.
What is the ticker and uniform number, so I have the right company?
GSEO, ticker 3406, uniform number 23572557. The ministry filing is here: https://findbiz.nat.gov.tw/fts/query/QueryCmpyDetail/queryCmpyDetail.do?banNo=23572557.
Who else is in the same line of work?
They sit in Optoelectronics. The other companies in that chapter are on the chapter page, with address and phone.
Can I place the order here?
No. We do not take payment, and we do not quote for GSEO. Call them at 04-25667115, or open https://www.gseo.com/tw. The site is presented by 時刻智能 × BRANDOMINATION. Email abitmore131@gmail.com, phone +886 2 7742 6299.
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