Hangzhou Seenpin Electromechanical Transmission Co., Ltd. - 杭州新剑机电传动股份有限公司
NEEQ-listed Hangzhou gear and screw maker now a tier-one Tesla Optimus supplier of roller screws and hand assemblies.
Hangzhou Seenpin Electromechanical Transmission Co., Ltd., traded on China's National Equities Exchange and Quotations (NEEQ) under the stock abbreviation Seenpin Transmission and code 871312, was founded on January 8, 1999 in Hangzhou, Zhejiang province. The company reports 569 employees and registered capital of about RMB 84.0 million, with an R&D team of more than 50 people holding bachelor's, master's, and doctoral degrees. Company filings and profile pages have at times referred to the same NEEQ-listed entity as Hangzhou Seenpin Robot Technology Co., Ltd., reflecting a shift in the company's stated business focus toward robotics over the past several years.
Seenpin's original business is precision mechanical transmission: cut and ground precision shafts, cold-rolled gears, worm gears, CNC precision shaped shafts, seat horizontal adjusters under its HDM product line, and miniature reducers. Building on this gear and shaft manufacturing base, the company has expanded into harmonic reducers, robotic joint modules, and collaborative-robot arms, and its own product pages describe R&D work on a planetary roller screw linear electric-drive joint intended for robot actuation.
This pivot has been validated commercially: financial media reported in January 2026 that Seenpin has become a tier-one supplier in Tesla's humanoid robot supply chain, having received orders for 1,000 or more dexterous-hand assemblies for the Optimus program, an upgrade from supplying discrete components to supplying a complete hand assembly. The company is building a new production base with total planned investment of RMB 2.6 billion, whose main structure was reported complete by the end of 2025, targeting an annual capacity of one million roller screws, and it is pursuing an IPO to help fund this capacity buildout.
No certifications, export markets, or specific funding-round amounts were found in public sources beyond the NEEQ listing itself, and the exact current registered street address could not be confirmed with certainty because different registry-style sources list different addresses in Hangzhou. The company's own website is reachable only over HTTP rather than HTTPS.
Primary type & automation activities this supplier delivers:
Planetary Roller Screw Linear-Drive Joint
Planetary roller screw linear electric-drive joint module developed by Seenpin for robotic joint actuation.
Dexterous Hand Assembly
Complete dexterous-hand assembly Seenpin supplies as a tier-one component partner for a humanoid-robot program.
Contact Hangzhou Seenpin Electromechanical Transmission Co., Ltd.
WEBSITE
http://www.seenpin.com/HEADQUARTERS
China
Company Facts
Founded
1999
Primary Role
Component Supplier
Company Size
employees 500-1000
Primary Region
Asia-Pacific
Annual Sales
-
Funding Stage
Public
Funding Total
-
Keywords
- Hangzhou Seenpin Electromechanical Transmission Co.
- Ltd.
- 杭州新剑机电传动股份有限公司
- 新剑传动
- 新剑股份
- Seenpin
- Hangzhou Seenpin Robot Technology Co.
- harmonic reducer
- planetary roller screw
- gear transmission
- robotic joint module
- seat adjuster motor
- dexterous hand assembly
- Component Supplier
- Motion & Actuation
- End-effector & Grasping
- Manufacturing
ROBOTTODAY Weekly July 27 – 31, 2026
Your weekly robotics briefing: the US bans imports of Chinese humanoid robots, Google DeepMind unveils Gemini Robotics 2, Unitree pushes toward its Shanghai IPO, and Amazon's Zoox wins approval for paid robotaxi rides.
US Restrictions on Chinese Humanoid Robots: The Full Map
Every US restriction on Chinese humanoid robots — NDAA Sec. 163, GUARD Act, the 1260H list — plus the supply-chain math and a 4-tier map of decoupling.
ROBOTTODAY Weekly June 30 – July 4, 2026
Unitree wins CSRC approval for China’s first humanoid IPO, Korea unveils ₩312T AI investment, RoboCup 2026 opens in Incheon, and Paris launches Europe’s inaugural Physical AI summit.
ROBOTTODAY Weekly May 23 – 29, 2026
This week in robotics: the Humanoids Summit debuts in Tokyo, China assigns every humanoid robot a digital ID, Figure signs a Catalyst Brands deployment deal, and Unitree heads to a June 1 IPO hearing. May 23–29, 2026.
ROBOTTODAY Weekly May 18 – 22, 2026
This week in robotics: Hyundai plans 25,000 Atlas robots for its factories, XPENG rolls off China’s first mass-produced L4 robotaxi, Singapore launches its first multi-operator physical AI testbed, and Kawasaki Heavy opens a Silicon Valley physical AI center with NVIDIA. May 18–22, 2026.
Unitree's IPO Review: What It Means for China's Humanoid Robot IPO Landscape
On 1 April 2026, China's Securities Association (CSAC) randomly selected Unitree Robotics for a mandatory on-site IPO inspection — just 12 days after its STAR Market application was accepted. The event has generated significant market commentary. This analysis examines the regulatory context, what the inspection actually means, the four core controversies in Unitree's prospectus, and the implications for competing humanoid robot companies pursuing public listings.
BrainCo Unveils Revo 3: A 21-DOF Dexterous Hand Built to Feel
BrainCo has launched Revo 3, a 21-DOF dexterous robot hand with full-palm tactile sensing and visuotactile fingertips. Read the full product briefing on RobotToday.
FUTURE WARFARE | Land - Unmanned Ground Vehicles — From Logistics Mules to Front-Line Robots
Ukraine fielded 15,000 unmanned ground vehicles in 2025 — surpassing its own procurement targets by over 100 percent. A single UGV held a front-line position for 45 days. Up to 90 percent of supplies to Pokrovsk now move by robot, not truck. The U.S. Army cancelled its $3 million Robotic Combat Vehicle and is starting over. China is deploying $3,000 robot dogs in PLA urban-warfare exercises. This article maps the emerging UGV battlefield — from Ukraine’s garage-built logistics fleet to the Pentagon’s stalled combat-vehicle ambitions, and from Ghost Robotics’ Vision 60 to the quadruped proliferation problem no treaty has yet addressed.
Heyman Waterproof Robotic Hand Can Wash Dishes Or Work 10 000 Meters Under The Sea
Heyman’s waterproof robotic hand handles everything from washing dishes to deep-sea tasks at 10,000 m, showcasing rugged manipulation for extreme environments.
Why the Tesla Supply Chain for Optimus is Consolidating in Chinese Yangtze River Delta
Why Tesla’s Optimus supply chain is consolidating in China’s Yangtze River Delta, where actuators, motors, and robotics suppliers enable humanoid scale.
