South Korean robotics company Tesollo Inc. announced on July 7, 2026 that it has initiated an IPO process and closed its Series B funding round. The company specializes in multi-fingered robotic hands for humanoid robots and now exports to 19 countries. At the same time, the humanoid robotics industry is confronting a fundamental bottleneck: no manufacturer is close to a certified 10,000-hour MTBR rating for a robotic hand.
Key takeaways
- Tesollo launched IPO preparations and closed Series B with POSCO Technology Investment, KB Investment, Enlight Ventures and strategic investors Daesung Hi-Tech and HL Mando
- The DG-5F-S hand weighs under 1 kg, costs about 60% of its predecessor, and uses proprietary in-house actuators
- The DG-5F model features 20 independently driven joints and matches the size of an adult male's hand
- The company exports to 19 countries — overseas sales now exceed domestic sales
- The critical industry KPI is MTBR (mean time between repair) — no manufacturer has reached a certified 10,000-hour threshold
IPO and Series B — what Tesollo announced
Tesollo, founded in 2019 in Incheon, South Korea, serves customers in the United States, China, and Japan. Exports to 19 countries and overseas revenue exceeding domestic sales indicate the company has moved past the local startup phase.
"Through our IPO, we aim to establish a corporate foundation that global customers can trust and accelerate our expansion into overseas markets. By strengthening our mass-production capabilities and advancing our core technology development, we will continue to grow into a global leader in the robotic hand sector."
— Young-Jin Kim, CEO of Tesollo
The Series B round included existing shareholders POSCO Technology Investment, KB Investment, and Enlight Ventures as follow-on investors. Industrial strategic investors Daesung Hi-Tech and HL Mando also joined. Participation from manufacturing and automotive sector players suggests demand for robotic hands beyond research settings.
Product line — from parallel gripper to five-fingered hand
Tesollo's DG product line spans two-fingered parallel grippers (DG-2F), a three-fingered DG-3, and five-fingered models DG-5F, DG-5F-M, and DG-5F-S. Each model is designed for rapid field replacement of fingers and joints during normal operation.
The DG-5F features 20 independently driven joints and matches an adult male hand in size. The DG-5F-S, built on Tesollo's own proprietary actuators, weighs under 1 kg and costs roughly 60% of its predecessor. The company demonstrated the DG-3 at AW 2026 in March and showed the DG-5F-M and DG-5F-S at the Robotics Summit & Expo and at ICRA in Vienna.
At ICRA, Tesollo also demonstrated its own VLA (vision-language-action) model for hand control — integrated with teleoperation, bin picking, in-hand manipulation, and dexterous tasks. This signals the company is building not just a component but a complete perception and control package.
MTBR — why humanoid hands break and what it takes to fix that
A humanoid hand is among the most failure-prone components on a robot. Dozens of micro-actuators, sensors, and tendon-driven cables create a structure with many single points of failure. An analysis by ENGtechnica on the humanoid hand bottleneck describes this as a "failure density" — any one of dozens of small elements can disable the entire hand.
The two key performance indicators in this category are MTBR (mean time between repair) and MTTR (mean time to repair). No manufacturer has yet achieved a certified 10,000-hour MTBR — and that is the threshold the industry requires for industrial and commercial humanoid deployment.
Tesollo addressed this during the design phase. The DG series is built for fast finger and joint replacement without specialized tools. That does not eliminate failures, but it reduces downtime and lowers maintenance cost — two factors that determine the economic case for industrial humanoid deployment.
Why it matters
Robotic hands are one of the last bottlenecks on the road to useful industrial humanoids. Arms can lift hundreds of kilograms. Torsos integrate batteries and compute. Legs handle uneven terrain. But a hand — with dozens of miniature components — still fails often enough that a humanoid cannot work through an industrial shift without service interruption.
Tesollo's IPO signals that the market is beginning to treat humanoid component suppliers as a standalone investment class alongside full-platform builders. The earlier question was "which humanoid platform wins?" The market is now also asking: "which component supplier will serve all of them?"
The strategic investors from the industrial sector — Daesung Hi-Tech and HL Mando — suggest that manufacturing and automotive companies are looking for a proven robotic hand supplier at scale, at a stage that research-stage prototypes cannot yet offer.
What's next
- Tesollo plans its IPO within the coming year — no specific date, exchange, or offering size has been disclosed
- The company is scaling mass-production capacity to meet rising demand from international customers in the US, China, and Japan
- The industry is waiting for the first robotic hand manufacturer to achieve a certified 10,000-hour MTBR — that milestone will mark the threshold for production-scale deployment
Sources
- The Robot Report — Tesollo initiates IPO process while developing humanoid hands
- ENGtechnica — The Robotic Hand Is Holding Back the Future of Humanoids
