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Hangzhou Seenpin Electromechanical Transmission Co., Ltd.
杭州新剑机电传动股份有限公司

Component Supplier

NEEQ-listed Hangzhou gear and screw maker now a tier-one Tesla Optimus supplier of roller screws and hand assemblies.

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Company Overview

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.

Capabilities & Activities

Primary type & automation activities this supplier delivers:

Applications & Industries

Product Categories

Products & Solutions

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.

Partnership & Notable clients

Associating Events

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Contact Hangzhou Seenpin Electromechanical Transmission Co., Ltd.

WEBSITE

http://www.seenpin.com/

HEADQUARTERS

No. 95 Wenhua Road
Cangqian Subdistrict, Yuhang District
Hangzhou , Zhejiang

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

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