Solumix

Solumix was founded in 2003 as a service-robot and personal-mobility specialist and listed on KONEX in April 2016, having launched products such as the guide robot 'Luvi' and what it described as the world's first 2-wheel balancing electric wheelchair conversion device.

The company has been described as the only domestic firm capable of developing and selling products end-to-end based on proprietary posture-control technology in robot actuation and balance control.

In February 2024, as part of a diversification strategy, it acquired 100% of Daoptic, a semiconductor materials maker that had worked as a Samsung Electronics tier-1 vendor for 24 years, producing roughly 40 million semiconductor material units annually (including silicone epoxy for Samsung smartphone LED lighting), and holding 15 patents plus a T4 technology-credit rating and IATF 16949 automotive quality certification.

Around the same time, the company also acquired a partial stake in Zainyps, an AI voice-synthesis firm, aiming to combine high-quality voice generation with its robots.

Through these M&A moves, the company sought to shift from a loss-making, single-segment robotics business toward a structure expecting profit contribution from the semiconductor materials segment.

Management stated it began humanoid robot development immediately after completing the Daoptic acquisition and the Zainyps stake purchase, and reportedly pursued a caddie-robot business partnership with golf-data specialist CNPS. Daoptic is separately understood to be preparing for a KOSDAQ technology-special listing.

However, the confirmed consolidated financial data available (2022-2023) reflects the pre-acquisition, robotics-only business, meaning audited financials fully reflecting the post-M&A structure fall outside the period covered in this report.

On a confirmed consolidated basis, 2022 revenue was KRW 1.37 billion, with an operating loss of KRW 2.58 billion and a net loss of KRW 4.25 billion. In 2023, revenue fell sharply to KRW 821 million year over year, yet the operating loss narrowed to KRW 1.99 billion and the net loss narrowed to KRW 3.22 billion.

While the reduced loss size despite falling revenue could reflect cost control or the fading of one-off items, the operating margin actually worsened, from -188.6% in 2022 to -242.4% in 2023, exposing a structural vulnerability where declining revenue amplifies the fixed-cost burden.

Owners' equity fell from KRW 4.03 billion in 2022 to KRW 2.98 billion in 2023, showing accumulated losses continuing to erode capital. Total liabilities rose from KRW 1.43 billion to KRW 1.84 billion over the same period, pushing the debt ratio up from 35.6% to 61.9%.

Operating cash flow improved from an outflow of KRW 1.93 billion in 2022 to an outflow of KRW 419 million in 2023, though this narrower cash burn may reflect temporary spending cuts rather than a genuine operating turnaround, warranting continued monitoring.

These confirmed figures predate the Daoptic acquisition, meaning the semiconductor materials business folded in from 2024 onward is not yet reflected in the confirmed financial data used in this report.

For reference, media-reported provisional 2023 figures for Daoptic (revenue of KRW 7.7 billion, operating profit of KRW 1.01 billion, and net income of KRW 870 million, per a February 20, 2024 Seoul Economic Daily report) are pre-audit estimates and should be treated separately from the confirmed consolidated results.

The service-robot and personal-mobility market is expected to see medium-to-long-term demand growth driven by an aging population, labor shortages, and expanding smart-factory automation, but it is a competitive field dominated by large electronics makers and specialized robotics firms, leaving a small KONEX-listed company dependent on securing R&D and marketing capital.

In the semiconductor materials segment, product cycles such as the expansion of on-device AI features in Samsung Electronics smartphones have been cited as a variable that could affect demand for components like those Daoptic supplies.

Daoptic's 24-year history as a Samsung Electronics tier-1 vendor suggests meaningful customer concentration, which can serve as both a stable revenue anchor and a risk tied to changes in the client's sourcing policy.

The semiconductor materials industry itself is already dominated by large chemical materials companies, making it difficult for a small KONEX name to expand market share on its own capabilities.

The company appears to be using M&A-driven diversification to partially offset this competitive disadvantage, with a subsidiary's potential transfer listing to KOSDAQ also floated as a route to raise capital and prompt a valuation reassessment.

However, because the KONEX market itself has limited liquidity and constrained information access, the speed and magnitude at which industry changes are reflected in the share price or corporate value may be more limited than on the KOSPI or KOSDAQ.

Early in the Daoptic acquisition, the company presented annual revenue and net income targets tied to expanding on-device AI smartphone demand (as announced in February 2024, a provisional forecast), though whether these translated into confirmed actual results requires verification through further disclosures.

In October 2024, media reports indicated Daoptic obtained an AA patent-evaluation grade while preparing for a KOSDAQ technology-special listing, with the company citing Daoptic's first-half revenue of KRW 7.3 billion and an annual revenue target above KRW 12 billion (provisional figures, per an October 7, 2024 Edaily report).

However, in 2025 the company appears to have faced a series of KONEX exchange issues, including an unfaithful-disclosure designation, a trading halt, a delisting-related objection with an improvement period granted, and a management-dispute lawsuit, meaning business-expansion plans and exchange-related issues have been unfolding in parallel.

How these improvement-period, litigation, and disclosure issues ultimately concluded needs to be separately verified through the latest filings, as the confirmed financial data covered in this report (2022-2023) does not yet reflect their financial impact.

Whether and when subsidiary Daoptic completes a KOSDAQ transfer listing, and whether new-business partnerships with Zainyps and CNPS translate into actual revenue, appear to be the key variables for gauging future business performance.