Withtech

Withtech was founded in 2003 and listed on KOSDAQ in 2020 as a specialist in environmental monitoring for semiconductor and display clean rooms.

The company holds technology for ultra-precise, round-the-clock monitoring of hazardous substances and contaminant compounds in clean rooms, offering customized environmental monitoring solutions. It holds 67 patents and has secured global competitiveness through domestic and international intellectual property rights.

Its core customer is SK Hynix, and in November 2025 it signed a supply contract for its NAVI-TM200L semiconductor manufacturing-environment monitoring equipment, a deal that at signing represented roughly 9.0% of the company's most recent annual revenue.

More recently the company has been expanding into nuclear decommissioning, developing a mobile radiochemistry laboratory for radionuclide analysis of decommissioning waste to enter this new market.

It has already supplied its 'SALT-100' equipment, jointly developed with the Korea Atomic Energy Research Institute, to KHNP's Hanbit Nuclear Power Plant, which has led the market to classify it among nuclear-decommissioning beneficiary stocks.

Under KOSDAQ classification it sits in the medical/precision-instruments sector, and under FICS classification in semiconductor and related equipment, and it is frequently grouped with domestic niche players such as Orbitech, Vitzrotech, and Wonil T&I as a decommissioning-related beneficiary.

Tightening clean-room management standards driven by process sophistication at semiconductor and display customers remain the core demand driver for its base business, while nuclear decommissioning is emerging as an early-stage growth pillar.

Consolidated 2025 revenue came to KRW 57.8bn, up 32.5% from KRW 43.6bn in 2024, while operating profit jumped to KRW 5.1bn from KRW 1.0bn, lifting the operating margin from 2.2% to 8.9%.

Net income attributable to owners, however, was KRW 6.4bn, slightly below the KRW 7.1bn recorded in 2024, meaning bottom-line profit lagged the improvement seen in revenue and operating profit.

Given that 2022 revenue peaked at KRW 72.6bn with an operating margin of 19.9%, 2025 can be read as an early recovery phase following the revenue and margin declines of 2023-2024.

Quarterly results show pronounced volatility: Q2 2025 revenue was KRW 10.7bn with operating profit of just KRW 0.1bn and a net loss attributable to owners of KRW 0.9bn.

Performance then improved through Q3 2025 (revenue KRW 15.8bn, operating profit KRW 2.0bn, net profit KRW 3.8bn) and Q4 2025 (revenue KRW 22.8bn, operating profit KRW 3.7bn, net profit KRW 4.8bn), showing a clear second-half-weighted pattern.

Yet in Q1 2026 revenue fell sharply to KRW 7.3bn with an operating loss of KRW 1.9bn, while net profit still came in positive at KRW 2.3bn, suggesting non-operating items had a substantial effect on the bottom line.

Q2 2026 saw another rebound, with revenue of KRW 18.3bn, operating profit of KRW 2.6bn, and net profit of KRW 3.4bn, extending the swing pattern seen in recent quarters.

On the cash-generation side, operating cash flow reached KRW 10.5bn in 2025, a marked improvement from KRW 2.5bn in 2024 and negative KRW 2.3bn in 2023, pointing to an improvement in earnings quality.

Withtech's core clean-room monitoring business tracks demand tied to process sophistication and tightening management standards at semiconductor and display fabs, with tightening clean-room management standards driven by process advances serving as a persistent demand base.

That said, the upstream semiconductor industry remains sensitive to the global cycle and big-tech capex trends, having recently passed through a period of sharp volatility that included a roughly 10% single-day decline in a major US semiconductor index.

The company's newer growth pillar, nuclear decommissioning, is a policy-driven industry. In June 2025 South Korea's Nuclear Safety and Security Commission approved the decommissioning plan for Kori Unit 1, marking the country's first-ever commercial reactor decommissioning process.

That project is expected to run roughly 12 years and require over KRW 1 trillion in spending, with demand for complex technologies spanning decontamination, waste storage, analysis equipment, structural dismantling, and instrumentation and control expected to create opportunities for numerous domestic niche technology firms.

Globally, the International Atomic Energy Agency counts 588 reactors slated for eventual permanent shutdown, with estimates putting the global decommissioning market at roughly KRW 500 trillion by 2050.

However, full-scale equipment deployment is reported to begin only from 2026-2027, meaning related revenue contribution remains at an early stage.

In this space, Withtech is commonly grouped with Orbitech, Vitzrotech, Wonil T&I, and Woojin as part of a theme-sensitive stock cluster whose fortunes move with policy and licensing milestones.

The company signed a supply contract with SK Hynix in November 2025 for its NAVI-TM200L semiconductor manufacturing-environment monitoring equipment, with the contract period running from November 6, 2025 through April 30, 2026, a period that has already concluded.

Whether such repeat order contracts continue is a key watch point for future revenue stability.

In nuclear decommissioning, the company has a track record of supplying its jointly developed SALT-100 equipment to Hanbit Nuclear Power Plant, leaving room for additional orders as the Kori Unit 1 decommissioning moves into its actual equipment-deployment phase around 2026-2027.

The company is also developing a mobile radiochemistry laboratory for radionuclide analysis of decommissioning waste to enter this new market, making the progress of related certification and demonstration procedures an important variable.

On shareholder returns, the board resolved an interim dividend on July 14, 2026, expanding its dividend policy beyond the existing annual regular dividend.

In the semiconductor segment, as the trend of tightening clean-room management standards continues, whether customers resume capital spending remains the key variable for a recovery in core-business revenue.

Overall, the company's near-term results hinge on order timing from semiconductor customers, while its longer-term growth story depends on the policy calendar and actual equipment-deployment timing in the nuclear decommissioning industry.