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🇹🇼EISO5291
TWDUSD
SectorInformation TechnologyIndustryElectronic ComponentsWebsitehttp://www.eiso.com.tw
Management
李上治
CEO

Company information

Ticker
5291
Country
Taiwan
Sector
Information Technology
Industry
Electronic Components

EISO Business Summary

EISO Enterprise Co., Ltd. (5291.TWO) operates a diversified manufacturing business model, generating revenue primarily through the fabrication of high-density interconnect (HDI) and multi-layer printed circuit boards (PCBs), specialized LED lighting, and its proprietary line of electric bicycles (e-bikes). The company’s PCB division serves a broad array of high-reliability end-markets, including industrial control systems, automotive electronics, medical equipment, and telecommunications infrastructure. A significant strategic pivot has seen the firm leverage its electronic integration and thermal management expertise to expand into the green mobility sector under the "EISO" e-bike brand, targeting the premium commuter and leisure markets. In the competitive landscape, EISO contends with large-scale PCB manufacturers such as Unimicron Technology and Compeq Manufacturing, as well as global bicycle leaders like Giant Group. EISO positions itself as a vertically integrated niche specialist, offering superior manufacturing agility and technical customization for complex, low-to-medium volume industrial applications that larger competitors often overlook. The leadership team is anchored by Founder and Chairman Gary Chien (Chien Jung-Kun), who established the company in 1984 and has steered its evolution from a pure-play PCB shop into a multi-sector technology firm. Chien brings over 40 years of expertise in chemical and electrical engineering, with a specific focus on the technical advancement of PCB manufacturing processes and material science. Supporting the executive suite is General Manager Shawn Lee (Lee Shang-Chih), who oversees the company’s operational efficiency and the global expansion of its e-bike and photoelectric divisions across Asia, Europe, and the Americas. EISO has been listed on the Taipei Exchange since 2014 and maintains a governance structure that prioritizes research and development in regenerative energy and high-frequency electronic materials. The founding team’s deep technical pedigree and long-term stability remain central to the company’s ability to navigate the cyclical nature of the global electronics and mobility industries.

Updated 2026-07-29 · TW Taiwan public company filings
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