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August 15, 2025 – Celanese Corp., a specialty materials and chemicals company headquartered in Irving, Texas, has signed a strategic partnership with Hong Kong-based VIGOR Precision Ltd., a manufacturer of precision plastic gears, to develop lighter, more durable plastic joints for humanoid robots. The collaboration aims to address a critical challenge in the fast-growing humanoid robotics market: the excessive weight of traditional metal joints, which limits endurance, response speed, and payload capacity.
The deal, announced on August 14 at Celanese’s Shanghai Commercial and Technology Center, brings together Celanese’s expertise in high-performance engineered materials and VIGOR’s precision plastic gear design and manufacturing. Under the agreement, Celanese will supply advanced polymers and technical support for robotic joint components, while VIGOR will handle injection molding and gear integration.
“Robotics is a rapidly expanding application area for engineered materials, with customers demanding compact, lightweight, and low-noise solutions that can operate reliably under demanding conditions,” said Todd Elliott, senior vice president of Celanese Engineered Materials, in a statement. “This partnership combines Celanese’s materials science and application development capabilities with VIGOR’s precision gear design and manufacturing to accelerate the next generation of robotic motion systems.”
The companies aim to reduce the weight of joint modules by more than 30% compared to current metal-based designs, without sacrificing precision or long-term reliability. Plastic joints also offer inherent advantages such as self-lubrication, noise reduction, and corrosion resistance, which are critical for humanoid robots operating in diverse environments—from factory floors to healthcare settings.
Humanoid robot joints face extreme mechanical stresses during high-speed starts and stops, repetitive motion, and collisions. The partners plan to overcome technical challenges including high strength and rigidity, thermal stability, precision transmission, and self-lubrication. Celanese’s portfolio includes materials such as polyoxymethylene (POM), polyamide (PA), and liquid crystal polymer (LCP) that can withstand continuous use at elevated temperatures while maintaining dimensional stability.
VIGOR, founded in 1982, has decades of experience in producing high-precision plastic gears for automotive, medical, and industrial applications. The company recently shifted its R&D focus toward humanoid robot components, seeing the partnership as a strategic entry point into the embodied AI market.
“VIGOR has deep expertise in precision plastic molding, while Celanese is a global leader in high-performance materials,” said Hoi-sang Chan, CEO of VIGOR. “This partnership marks a crucial step in embedding ‘material genetics’ into precision manufacturing. Together, we aim to achieve the ideal material formulation for robotic joints, clearing the path for large-scale deployment of humanoid robots.”
The partnership comes amid a surge in investment and development in humanoid robotics. According to a 2025 report from the International Federation of Robotics, the global market for humanoid robots is projected to reach $38 billion by 2030, with applications in manufacturing, logistics, hospitality, and elder care. Celanese executives view robotic components as an emerging sector that could drive significant demand for engineered plastics over the next decade.
Celanese has been strengthening its ties to Asia. In early 2025, the company partnered with Li Auto, a Chinese electric vehicle maker, to develop low-emission cabin materials that reduce volatile organic compounds (VOCs) and the “new car smell” associated with formaldehyde. The new robotics partnership further deepens Celanese’s presence in the region, which is home to many of the world’s largest robotics manufacturers.
Celanese, a Fortune 500 company, reported net sales of $9.5 billion in 2025, with a workforce of more than 11,000 employees across North Texas, Switzerland, China, and 24 other countries. The company is one of the world’s largest producers of acetyl products and also supplies polymers, paints, and coatings to industries ranging from aerospace to energy.
Industry analysts note that the shift from metal to plastic in robotic joints mirrors trends seen in automotive and aerospace, where weight reduction directly improves efficiency and performance. “The humanoid robot market is still nascent, but every kilogram saved in joint weight can translate into longer operating time and lower energy consumption,” said Dr. Emily Zhao, a robotics researcher at the University of California, Berkeley, who was not involved in the partnership. “Plastic joints also enable more complex, multi-axis designs that are harder to achieve with metal gears.”
The partnership agreement establishes a supplier-customer relationship but also includes provisions for deeper technical integration, allowing the two companies to share design data, simulation models, and testing protocols. This level of collaboration is expected to accelerate the development cycle and reduce time-to-market for next-generation robotic components.
Neither company disclosed financial terms of the deal, but both indicated that initial samples of the plastic joint modules are expected to be available for evaluation by early 2026. The partners plan to target robotics OEMs and integrators first, with potential expansion into other types of robots, including collaborative robots (cobots) and exoskeletons.
As humanoid robots move from research labs to real-world deployments, the demand for lighter, quieter, and more reliable joints will only grow. The Celanese-VIGOR partnership is a concrete example of how materials innovation can unlock new possibilities in embodied AI, helping robots become more efficient, affordable, and practical for everyday use.
