EISO Enterprise

What EISO Enterprise does

EISO Enterprise Co., Ltd. (邑昇實業股份有限公司) is a Taiwan-based printed circuit board (PCB) manufacturer founded in 1994 and headquartered in Guishan District, Taoyuan City. The company designs and produces high-end multilayer PCBs (2-20 layers), thick copper boards (2-6oz), and 1st/2nd/3rd-order HDI boards with stacked and buried vias, laser micro-via drilling, VIP (via-in-pad) processing, and immersion silver finishing. It also processes specialty high-frequency materials including Rogers and Teflon+FR4 composites for RF and millimeter-wave substrates, serving industrial computing, automotive electronics, telecom/RF, aerospace and defense, and medical equipment OEMs through a direct B2B sales motion with custom quote-based pricing.

The company monetizes primarily through custom PCB manufacturing contracts, with revenue supplemented by the DOSUN sub-brand (established 2012) for electric-assisted bicycles and bicycle lighting products, which is being scaled internationally through European and American distribution partnerships. Production is fully based in Taiwan, which EISO uses as a deliberate non-mainland-China supply-chain positioning for US and European aerospace and defense customers. The company is publicly listed on Taiwan's TPEx OTC market under stock code 5291 since 2014, and holds a broad certification stack including IATF 16949:2016, ISO 9001:2015, ISO 14001:2015, ISO 50001:2018, QC080000, and UL.

Recent strategic activity has emphasized capability upgrade and vertical diversification: mass production of 3rd-order HDI and RF/mmWave substrates from 2021, factory expansion planning for high-end PCBs in 2024, first-time participation in the US Satellite 2024 exhibition to enter the LEO satellite supply chain, and a 2024 DOSUN e-bike product launch. The company employs 101-250 people, operates one primary manufacturing site in Guishan, and is led by Chairman Jian Rongkun (簡榮坤).

Name

EISO Enterprise

Legal name

邑昇實業股份有限公司

Website

https://eiso.com.tw

Company type

Public

Founded year

1994

Operating status

Operating

Headcount range

101–250 employees

Short description

EISO Enterprise is a Taiwan-based PCB manufacturer founded in 1994 that produces high-end multilayer, thick copper, HDI, and RF/millimeter-wave printed circuit boards for industrial, automotive, aerospace/defense, telecom, and medical OEMs, with a secondary DOSUN e-bike and bicycle lighting brand.

Ownership category

akta.pro rank

Product category

PCB Manufacturing

NAICS

Bare Printed Circuit Board Manufacturing (334412)

SIC

Printed Circuit Boards (3672)

akta.pro primary industry

PCB Fabrication (Rigid PCBs) (HDAHAOAG)

akta.pro secondary industries

Printed Electronics & Advanced Substrates (HDI, IC Substrates, Embedded Components) (HDAHAOAK), PCB Materials & Laminates (Copper Clad, Prepreg, Cores) (HDAHAOAJ)

Keywords

• High-layer-count PCB manufacturing
• Thick copper printed circuit boards
• HDI microvia circuit boards
• RF and millimeter-wave substrates
• Automotive electronics PCBs

Headquarters

HQ city

Taoyüan

HQ country

Taiwan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. PCB manufacturing and sales: EISO's primary revenue stream comes from manufacturing and selling high-end printed circuit boards (2-20 layers, thick copper, HDI, special materials) to industrial, automotive, aerospace, telecom, and consumer electronics customers. Revenue is generated through direct B2B sales with custom orders and mass production runs.
2. DOSUN brand (e-bikes and bicycle lights): Secondary revenue stream from the DOSUN brand, established in 2012, which produces electric-assisted bicycles (e-bikes) and bicycle lighting products. Sales are made through brand distribution and international expansion, particularly in European and American markets.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

EISO Enterprise manufactures high-end printed circuit boards (PCBs) for industrial, automotive, telecommunications, aerospace, defense, and medical applications, with capabilities spanning 2-20 layer multilayer boards, 2-6oz thick copper, 1st/2nd order HDI with stacked and buried vias, and special materials such as Rogers and Teflon+FR4 for RF and millimeter-wave substrates. The company also operates the DOSUN sub-brand for consumer electric assisted bicycles and bicycle lighting products through its Optoelectronics Division.

Product overview

EISO Enterprise is a Taiwan-based PCB (printed circuit board) manufacturer established in 1994, offering high-end multilayer PCBs (2-20 layers), thick copper boards (2-6oz), HDI boards, and special material PCBs. The product portfolio includes MCPCB-copper substrates, Rogers+FR4 RF materials, and advanced HDI products with laser drilling and VIP processes. Applications span industrial control, automotive electronics, aerospace/defense, RF communications, medical equipment, and satellite communications. Additionally, the company operates the DOSUN sub-brand for electric assisted bicycles and bicycle lighting products through its Optoelectronics Division established in 2008.

Differentiator

Problem solved

Functional benefit

Brands

• DOSUN: Bicycle lighting and electric assisted bicycle (E-bike) brand established in 2012. Products include innovative bicycle lights and E-bikes marketed globally with focus on cycling safety and smart technology.

Products and services

• High-end Multilayer PCBs (2-20 layers) High-end multilayer printed circuit boards spanning 2 to 20 layers, manufactured for industrial computer, networking, automotive, telecom, and consumer electronics customers requiring reliable, high-density boards.
• MCPCB-Copper Substrate Metal Core Printed Circuit Board with copper substrate designed for high heat dissipation applications, suited to LED and power electronics use cases.
• Rogers+FR4 Special Material PCB High-frequency PCB combining Rogers material with FR4, engineered for RF and microwave applications requiring low loss and stable dielectric performance.
• Second-order Laser Micro-via + VIP Process + Immersion Silver PCB Advanced HDI PCB using second-stage laser drilling, via-in-pad (VIP) technology, and immersion silver surface finishing, intended for compact, high-density applications requiring high-reliability interconnects.
• Thick Copper Board (4oz inner/outer) Thick copper PCB with 4oz inner/outer copper weight for power electronics applications, supporting thermal management and high-current carrying requirements.
• RF & Millimeter-Wave PCBs High-frequency PCBs for RF and millimeter-wave applications including antennas, GPRS and 4G modems, tracking units, amplifiers, and attenuators, using Rogers and Teflon+FR4 special materials for telecom and satellite customers.
• Automotive Electronics PCBs IATF 16949-compliant PCBs for automotive electronics applications including infotainment, ADAS, antenna systems, HUD, and TPMS, manufactured in thick copper and high-layer-count configurations.
• Aerospace & Military PCBs High-reliability PCBs for aerospace and military applications including LEO satellites, APS/VPS/HFD systems, Short-Range Air Defense (SHORAD), Counter-UAS, and hemispheric surveillance.
• Medical Equipment PCBs High-reliability PCBs for medical equipment including laboratory equipment, scanners, monitors, and detectors, manufactured to support precision and compliance requirements.
• DOSUN Electric Assisted Bicycle Electric assisted bicycle (E-bike) under the DOSUN consumer brand, featuring 5-level power assistance, energy-efficient design, and battery technology for urban commuting and leisure riding, sold to consumers in European and American markets.
• DOSUN Bicycle Lights Bicycle lighting products sold under the DOSUN consumer brand, focused on rider safety, innovative design, and high-quality construction for global cycling consumers.

Quantifiable outcome

• Successfully mass producing 3-step HDI boards and RF & millimeter-wave substrates since 2021
• +1 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators5 records

Recent moves13 records

Expansion highlights5 records

Direct peers

• Chin-Poon Industrial: Taiwan PCB manufacturer focused on automotive and industrial PCBs, including thick copper boards. Direct peer to EISO in automotive electronics PCBs (IATF 16949-certified) and thick copper capability.
• HannStar Board Corporation: Taiwan-based PCB maker producing multilayer PCBs, HDI, and rigid boards for consumer electronics, networking, and industrial customers. Directly comparable product portfolio and target segments to EISO.
• Compeq Electronics: Taiwan PCB manufacturer focused on HDI, multilayer, and rigid PCBs for smartphones, networking, and automotive applications. Comparable to EISO in PCB fabrication technology and end-market exposure to networking and industrial electronics.
• Gold Circuit Electronics: Taiwan PCB manufacturer specializing in multilayer PCBs (up to 30+ layers) and HDI boards for industrial, networking, and server applications. Direct peer in high-layer-count PCB manufacturing for industrial customers.
• Tripod Technology Corporation: Major Taiwan-based PCB manufacturer producing multilayer, HDI, and high-layer-count PCBs for automotive, networking, and industrial customers. Directly comparable to EISO in terms of product portfolio (HDI, multilayer PCBs) and target end markets.
• Dynamic Electronics: Taiwan PCB manufacturer producing multilayer, HDI, and rigid-flex PCBs for automotive, industrial, and consumer applications. Comparable product mix and Taiwan-based production base to EISO.

Broad incumbents

• Zhen Ding Technology Holding: Large Taiwan-based PCB manufacturer producing FPC, HDI, and rigid PCBs mainly for mobile devices, with growing automotive exposure. Overlaps with EISO in rigid PCB manufacturing but operates at substantially larger scale.
• AT&S (Austria Technologie & Systemtechnik): Austrian PCB manufacturer producing HDI, IC substrates, and high-frequency PCBs for automotive, industrial, and medical applications. Comparable in advanced PCB capabilities and high-reliability end markets (automotive, medical) to EISO, but at much larger scale.
• Unimicron Technology Corporation: Largest Taiwan-based PCB manufacturer producing HDI, IC substrates, and multilayer PCBs. Overlaps with EISO in multilayer and HDI PCBs but operates at significantly larger scale and broader product range including advanced IC substrates.

Regional players

• MEIKO Electronics: Japan-based PCB manufacturer producing HDI, multilayer, and high-frequency PCBs for automotive, industrial, and telecommunications customers. Comparable product portfolio to EISO, particularly in RF/high-frequency materials, but serves primarily Japanese customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about EISO Enterprise