PER, EPS, PBR and BPS are calculated in-house from the last 4 quarters (2025Q3–2026Q2) · Dividend yield is based on ₩0 per share · Prices as of the 2026-10-02 close
Sangshin Electronics continues to grow revenue on the strength of its home-appliance EMI noise filter business, but wide quarter-to-quarter swings in operating profit mean the quality of earnings still needs to be watched.
2025 consolidated revenue reached KRW 129.1bn, up year on year, with operating margin improving to 2.0%, the fourth straight year of improvement
After consecutive operating losses in 2025Q4 and 2026Q1, the company returned to an operating profit in 2026Q2
The core product lineup — noise filters, coils, and reactors — is mainly used in white-goods appliances such as air conditioners, washing machines, and refrigerators
The company is diversifying into reactors for solar, ESS, and electric vehicles, and has supplied prototype ferrite-core automotive parts
The debt ratio fell from 104.8% in 2023 to 64.2% in 2025, indicating an improving financial structure
Sangshin Electronics was founded in 1988 and listed on KOSDAQ in 2017 as a specialist manufacturer of electromagnetic interference (EMI) shielding components.
Its product lineup centers on three items — noise filters, coils, and reactors — with noise filters, which remove electrical noise using coils and capacitors mounted on PCBs, historically accounting for the largest share of sales.
These products are mainly used in the three major white-goods categories of air conditioners, washing machines, and refrigerators, with application also expanding into newer appliances such as dryers, clothing stylers, electric ranges, and air purifiers.
The company's principal customers are LG Electronics and Samsung Electronics, which together account for a substantial portion of consolidated sales, with Cuckoo and Cuchen also among its client base.
Building on the technical know-how accumulated in noise-filter development and production, the company has expanded its reactor business into new areas including solar power, energy storage systems (ESS), and electric vehicles.
Because ferrite core, the key raw material for reactors, is the same core material used in its existing EMI filters, Sangshin Electronics has developed ferrite-core reactors for automotive and power-electronics applications and has supplied prototypes to renewable-energy and automotive-parts customers.
More recently, as global automakers move to reduce rare-earth dependence by developing ferrite-based motors, the company's position as a supplier with ferrite core capability has drawn attention.
Within the KOSDAQ electronics component sector it is classified as a mid-sized parts maker, and it is understood to operate an overseas production base that supports supply to the overseas plants of domestic appliance makers.
| Quarter | Revenue | Operating profit | Op. margin |
|---|---|---|---|
| 2025Q2 | ₩31.7B | ₩1B | 3.2% |
| 2025Q3 | ₩32.4B | ₩1B | 3.2% |
| 2025Q4 | ₩30.6B | -₩400M | −1.2% |
| 2026Q1 | ₩35.5B | -₩600M | −1.7% |
| 2026Q2 | ₩34.9B | ₩200M | 0.6% |
| Year | Revenue | Operating profit | Net income (parent) | Op. margin | ROE | Debt-to-equity |
|---|---|---|---|---|---|---|
| 2022 | ₩111.3B | ₩800M | ₩1.1B | 0.8% | 2.7% | 83.7% |
| 2023 | ₩109.7B | ₩1.5B | ₩2.2B | 1.4% | 5.2% | 104.8% |
| 2024 | ₩125B | ₩2.1B | ₩2.4B | 1.7% | 5.2% | 84.7% |
| 2025 | ₩129.1B | ₩2.6B | ₩1.7B | 2.0% | 3.3% | 64.2% |
Consolidated basis (financial statements including subsidiaries) · Final figures from DART filings · Net income attributable to owners of the parent · Data as of 2026-08-23
Consolidated revenue slipped slightly from KRW 111.3bn in 2022 to KRW 109.7bn in 2023 before rebounding to KRW 125.0bn in 2024 and KRW 129.1bn in 2025.
The operating margin improved for four consecutive years, rising from 0.8% in 2022 to 1.4% in 2023, 1.7% in 2024, and 2.0% in 2025, suggesting a gradual stabilization of the cost structure.
Net income attributable to owners, however, rose from KRW 1.1bn in 2022 to KRW 2.2bn in 2023 and KRW 2.4bn in 2024 before falling back to KRW 1.7bn in 2025, a year in which operating-profit gains did not fully translate into net-profit gains.
On a quarterly basis, 2025Q2 posted an operating profit of KRW 1.0bn but a net loss attributable to owners of roughly KRW 0.4bn, while 2025Q3 saw a sharp improvement with operating profit of KRW 1.0bn and net profit of KRW 1.3bn.
Operating losses of about KRW 0.36bn in 2025Q4 and KRW 0.62bn in 2026Q1 then followed in consecutive quarters, signaling volatility in core profitability, yet net profit attributable to owners stayed modestly positive in both quarters at roughly KRW 0.23bn each, suggesting non-operating items cushioned the bottom line.
In 2026Q2, operating profit turned positive again at around KRW 0.2bn, with net profit of KRW 0.3bn, pointing to a gradual recovery in the most recent quarter.
Over the trailing four quarters (2025Q3–2026Q2), revenue grew modestly while operating profit remained at a low level, highlighting a clear gap between the pace of revenue growth and the pace of profitability recovery.
On the cash-flow side, operating cash flow swung from a net outflow of KRW 1.2bn in 2022 to inflows of KRW 6.3bn in 2023, KRW 1.3bn in 2024, and KRW 3.5bn in 2025, a positive signal for financial stability.
The white-goods market that anchors Sangshin Electronics' core business is being supported by a shift toward premium and smart appliances combined with tightening electromagnetic compatibility (EMC) regulations, both of which underpin demand for EMI countermeasure components.
That said, the finished-appliance market itself, both domestically and globally, has entered a mature phase, so for component makers, expansion into new appliance categories and the ability to serve overseas production bases have become the key watch points for growth.
Fluctuations in the prices of raw materials such as copper and ferrite directly affect the cost structure, and rising copper prices have previously been cited as a factor behind weak earnings.
More recently, as China restricted exports of rare-earth-related items such as gallium and germanium to the United States amid an escalating resource rivalry between the two countries, component makers that use alternative materials like ferrite have drawn market attention.
In the electric-vehicle drive motor segment, global automakers including Tesla and Hyundai Motor are pursuing ferrite-based motor development to reduce rare-earth dependence, and this has led to views that component makers with ferrite core capability could see new demand open up over the medium to long term.
However, these new business areas remain at the prototype or small-volume supply stage, meaning it will take time before they contribute meaningfully to revenue.
On the competitive front, numerous small and mid-sized domestic electronics component makers participate in the EMI filter and reactor market, making cost competitiveness and quality reliability ongoing sources of differentiation.
Building on the stable revenue base of its existing appliance noise-filter and coil business, the company continues to diversify into reactors for solar, ESS, and electric-vehicle applications, and has confirmed instances of supplying ferrite-core-based automotive reactor prototypes.
However, the revenue contribution or mass-production timeline for these new businesses has not been specifically confirmed, so it remains to be seen when they will translate into meaningful earnings contribution.
The return to operating profit in 2026Q2 following consecutive operating losses in 2025Q4 and 2026Q1 suggests core profitability may have passed a trough, but given the significant quarter-to-quarter volatility seen recently, further quarterly results will be needed to confirm the direction.
With the debt ratio falling from 104.8% in 2023 to 64.2% in 2025 and operating cash flow maintaining net inflows for several consecutive years, the company's financial buffer appears to have relatively improved.
The trajectory of raw material prices, particularly copper and ferrite, along with the evolution of US-China rare-earth-related export controls, remain variables that could affect both cost structure and the new-business segments.
No specific revenue or profit guidance from the company has been confirmed, so earnings will need to be tracked through upcoming quarterly and semiannual disclosures.
Sangshin Electronics appears to trade at a discount to net asset value, which can be interpreted as reflecting the market's cautious view on the quality and volatility of its earnings.
In the early years after listing, the stock traded at a premium to net asset value on the back of a stable dividend payout policy, but more recently, even after net profit turned from loss to profit, continued quarter-to-quarter swings have put the market's valuation assessment in a different phase than before.
On the dividend front, no clear dividend signal has been confirmed, suggesting expectations for shareholder returns remain limited.
The sustainability of the earnings recovery and whether new businesses (EV and renewable-energy reactors) begin contributing meaningfully to revenue are likely to be the key variables in future valuation discussions.
PER, EPS, PBR and BPS are all calculated in-house (the same method as Naver and Toss) · Dividend yield = cash dividend per share from DART filings (supplemented by KRX) ÷ current price · As of 2026-08-23
Operating margin has risen steadily every year from 0.8% in 2022 to 2.0% in 2025, indicating multi-year cost-structure improvement. The return to operating profit in 2026Q2 also suggests this improvement trend may not be fully over.
Revenue scale has also expanded from KRW 111.3bn to KRW 129.1bn over four years, accompanied by top-line growth.
The debt ratio fell sharply from 104.8% in 2023 to 64.2% in 2025, improving financial stability. Operating cash flow also shifted from a net outflow in 2022 to net inflows in 2023 through 2025, easing the burden of external financing.
This financial capacity could serve as a buffer for new-business investment or in responding to external shocks.
Based on ferrite core expertise accumulated through noise-filter production, the company has developed reactors for solar, ESS, and EV applications and has confirmed instances of prototype supply.
This aligns with a trend among global automakers toward developing rare-earth-reduced ferrite motors, raising the possibility of medium-to-long-term demand expansion. Reactors are known to carry higher margins than noise filters, so an increase in their revenue share could also contribute to profitability improvement.
After consecutive operating losses in 2025Q4 and 2026Q1, the company swung back to profit in 2026Q2, reflecting significant volatility in operating results over the trailing four quarters. Unlike the improving annual operating-margin trend, core profitability has frequently wavered on a quarterly basis.
This volatility is presumed to stem from a combination of factors, including early-stage new-business investment and raw material price fluctuations.
In 2025, despite an increase in operating profit versus the prior year, net profit attributable to owners fell from KRW 2.4bn to KRW 1.7bn. In 2025Q4 and 2026Q1, net profit stayed modestly positive despite operating losses, suggesting non-operating factors supported results.
As the influence of non-operating items grows, it becomes harder to project future earnings from core operations alone.
Most of the company's revenue depends on the mature white-goods market, making structural high growth difficult to expect from the business as currently structured.
Fluctuations in raw material prices such as copper and ferrite have previously been cited as a cause of weak earnings, so cost-management risk is a persistent factor.
The new EV and renewable-energy reactor business remains at the prototype and small-volume supply stage, leaving the timing of any meaningful revenue contribution uncertain.
If prices of key raw materials such as copper and ferrite rise, cost pressure could increase and reverse the recent operating-margin improvement trend. Rising copper prices have previously been cited as a cause of weak earnings, so a repeat cannot be ruled out. How quickly procurement cost increases can be passed through to selling prices is a key factor.
Because a large share of revenue is concentrated with major clients LG Electronics and Samsung Electronics, results are directly affected by changes in these companies' appliance production and sales strategies.
If global appliance demand slows or a customer changes its component sourcing policy, revenue could be negatively affected. Given the high customer concentration typical of a component supplier, the pace of customer diversification also warrants monitoring.
The EV and renewable-energy reactor business remains at the prototype and small-volume supply stage, leaving the timing of the transition to mass production and revenue expansion uncertain. Depending on whether and how quickly automakers adopt ferrite motors, related demand could be delayed or reduced. Initial costs associated with new-business investment could also temporarily weigh on profitability.
The 2026 Q3 quarterly report disclosure will show whether the return to operating profit continues and whether the 2026Q2 recovery trend is reconfirmed.
It will be worth checking for any news of new supply contracts or a transition to mass production related to EV and renewable-energy reactors.
If an annual dividend policy decision is disclosed, it will be worth checking how the payout ratio has changed in line with recent net profit trends.
The evolution of copper and ferrite raw material prices, along with US-China rare-earth export control issues, should continue to be monitored for their impact on both cost structure and new business segments.
Sangshin Electronics has improved its operating margin for four consecutive years on the strength of its core home-appliance EMI filter business, but its quarterly results have shown considerable volatility, including consecutive operating losses in 2025Q4 and 2026Q1 followed by a return to profit in 2026Q2.
Annual net profit fell from KRW 2.4bn in 2024 to KRW 1.7bn in 2025, meaning operating-profit gains did not fully carry through to net profit, with non-operating factors appearing to have a relatively larger influence.
On the balance-sheet side, a declining debt ratio and sustained net inflows from operating cash flow are confirmed as positive signals.
On the business side, the company is diversifying into reactors for solar, ESS, and EV applications and has supplied prototype automotive parts leveraging its ferrite core expertise, though the timing of any meaningful revenue contribution remains uncertain.
Raw material prices, dependence on key customers, and the pace of new-business commercialization stand out as the key variables that will shape future earnings direction.
Before forming any investment judgment, it will be important to track upcoming quarterly earnings disclosures and the progress of new business initiatives.
Report written 2026-09-05 · Data as of 2026-09-04
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