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Component supplier · registered
SPG
SPG Co., Ltd. designs and mass-produces precision speed reducers that serve as the core joint components for robots. It is the only Korean maker able to volume-produce all three precision-reducer types used in robotics: planetary, strain-wave/harmonic (SH series) and cycloidal RV (SR series). The SH harmonic line targets high-precision collaborative and humanoid robots, while the SR RV line goes into higher-load robot arms. CEO Lee Jun-ho has restructured the company's portfolio around precision reducers and actuators for AI and humanoid robots.
HeadquartersIncheon, KR
Founded1991
Corporate fundingNot disclosed
TeamNot listed
Deployments0
Open roles0
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Company overview
Identity and operating footprint
Company typeComponent supplier
Market segmentCorporate
StagePublic (KOSDAQ: 058610)
FoundersLee Jun-ho (Founder & CEO)
Regions servedSouth Korea, North America, Europe
Countries deployedNot listed
Service footprintNot listed
Last reviewed2026-07-16
LinkedInNot listed
XNot listed
TL
Company timeline
Milestones and announcements
2024-01-01SPG becomes the only Korean company mass-producing all three precision-reducer types (planetary, harmonic SH, cycloidal RV) for robots; recorded KRW 388.5B revenue in 2024irobotnews (로봇신문)
2024-01-01SPG: 33 years developing precision reducers, expanding robot-reducer business ↗irobotnews (로봇신문)
2023-01-01Launched 2023-2026 national R&D program (KRW 7.64B) to develop next-generation robot reducers and reliability-enhancement technologyirobotnews (로봇신문)
SC
Source ledger
3 unique public sources