Sy Dong-a

Founded in 1974 and listed on KOSDAQ in 2001, SY Donga is a precision rubber and plastic parts maker for automotive and home appliance applications, and it changed its corporate name from Donga Hwasung to SY Donga in 2026.

The automotive segment produces air intake hoses, intercooler pipes, and battery pack gaskets mainly for Hyundai Motor and Kia, while the appliance segment supplies washing-machine door gaskets primarily to LG Electronics.

Research Alum estimated the company's 2026 revenue mix at 50.8% automotive and 49.2% appliances as it expands from these core businesses into higher-growth robotics and defense.

The company operates manufacturing and sales subsidiaries across seven countries -- the United States, China, India, Vietnam, Mexico, Japan, and Russia -- to support its global customer base.

In December 2025, Samyoung Partners, a wholly owned subsidiary of KOSDAQ-listed Samyoung MTech, acquired a 42.18% stake at KRW 20,000 per share, becoming the new controlling shareholder and setting the stage for the company's push into robot precision drive/cushioning rubber parts and defense components built on its accumulated rubber-materials expertise.

The company is pursuing Defense Quality Management System (DQMS) certification and registration as a supplier to major defense contractors, aiming to leverage harsh-condition design know-how from auto parts into defense applications.

Through its 72.5%-owned subsidiary SY Donga Fuel Cell, it has commercialized 5kW high-temperature and 10kW low-temperature building fuel cell systems and is developing a vanadium redox flow battery stack for energy storage with a target of 2028. Competitors include Yuil Rubber, Tranet, and Daebong Industrial.

Consolidated revenue rose for a fourth consecutive year, from KRW 349.64 billion in 2022 to KRW 403.41 billion in 2025, while the operating margin fluctuated from 4.1% to 5.9% to 4.8% to 4.3% over the same period.

Operating profit in 2025 fell to KRW 17.18 billion from KRW 18.39 billion in 2024, yet owner-attributable net profit jumped to KRW 27.53 billion from KRW 14.58 billion, far outpacing the change in operating profit.

Indeed, in the third and fourth quarters of 2025, owner net profit (KRW 8.59 billion and KRW 6.25 billion) was well above operating profit (KRW 5.65 billion and KRW 0.14 billion), suggesting a large contribution from non-operating items.

Cash flow also improved markedly, with operating cash flow nearly doubling from KRW 13.06 billion in 2024 to KRW 26.26 billion in 2025, while the debt ratio declined from 100.1% in 2023 to 63.7% in 2025, indicating a stronger balance sheet.

The trend reversed in 2026, however: first-quarter revenue fell to KRW 94.87 billion from KRW 102.22 billion a year earlier, operating profit dropped to KRW 4.45 billion, and owner net profit came to only KRW 2.86 billion.

In the second quarter, despite revenue of KRW 98.69 billion and operating profit of KRW 2.19 billion, owner net profit swung to a loss of about KRW -0.60 billion.

Media reports attributed the first-quarter net profit decline to rising non-operating costs including financial-asset valuation losses and foreign-currency translation losses, with financial costs rising to KRW 6.7 billion and net financial income/loss turning to a deficit of roughly KRW 2.0 billion.

Owner net profit summed over the most recent four quarters (Q3 2025 through Q2 2026) came to KRW 17.11 billion, keeping the company in profit on that basis even as quarterly volatility has clearly increased.

SY Donga's core automotive-parts business sits within the structural shift toward higher hybrid and electric vehicle mix.

Research Alum projected that rising eco-friendly vehicle sales would expand demand for intercooler pipes and battery gaskets, supporting stable growth in the automotive segment, and automotive segment revenue did rise from KRW 172.9 billion in 2023 to KRW 199.2 billion in 2025.

The appliance segment, by contrast, tracks demand for white goods such as drum washing machines, and saw revenue decline in 2026 amid softer demand.

The robotics growth pillar is in an early humanoid-production phase: Hyundai Motor Group plans to move its Boston Dynamics humanoid "Atlas" into full-scale production starting in 2028, and LG Electronics is running field trials of its "CLOi" robot, with the industry citing this as a driver of demand for precision drive and cushioning rubber parts.

The defense segment sits in a growth phase where, per UN projections, global defense spending could more than double from 2024 levels to as much as USD 6.6 trillion by 2035, and SY Donga is positioning its harsh-condition design expertise from auto parts as an asset for entering that market.

In the domestic equity market, robotics-themed ETFs have reportedly seen roughly KRW 1.3 trillion in net inflows since the start of the year, reflecting continued investor interest in the theme.

That said, in the robot-parts supply chain, established robotics specialists such as Rainbow Robotics and Robotis are already supplying finished units and components, meaning new entrants like SY Donga still need to establish and confirm their actual position within that supply chain.

SY Donga held its first large-scale corporate IR event on September 2, 2026 to update investors on second-quarter results and overall business conditions.

The company said it is pursuing robotics and defense as core future growth businesses, working on Defense Quality Management System (DQMS) certification and registration as a supplier to major defense contractors while also advancing joint development agreements (JDAs) with domestic and overseas robot OEMs and parts makers.

In the automotive segment, rising demand for intercooler pipes tied to a higher mix of hybrid vehicle sales is cited as a positive factor, but softer demand for drum washing-machine parts in the appliance segment combined with fluctuating demand for automotive battery-pack gaskets weighed on first-half 2026 results.

The hydrogen fuel cell subsidiary, SY Donga Fuel Cell, recorded no revenue through 2025 and the first quarter of 2026 and has negative equity, leaving the timing of actual commercial revenue as an item that still needs to be confirmed.

Research Alum estimated 2026 revenue at KRW 423.4 billion, up 5.0% year-on-year, and operating profit at KRW 17.5 billion, up 1.7% -- an external analyst projection as of its May 2026 report, not official company guidance.

In the broader automotive and robotics industry, Hyundai Motor Group is expected to begin a robot proof-of-concept trial at its Georgia manufacturing plant (HMGMA) around October 2026, and the pace at which such OEM production schedules become concrete could affect the visibility of SY Donga's parts order pipeline.