About Us

Jiande Wuxing Bicycle Co., Ltd. was founded in 1985 and is headquartered in Jiande, Zhejiang, China. For more than 40 years, Star Union has remained focused on the two-wheeler industry. The company began with bicycle gear-shifting and braking components, and later expanded into core electric two-wheeler components such as throttles, brake levers and switches as the industry moved toward electrification. Today, its product portfolio also covers hydraulic braking systems, lighting, displays, human-machine interfaces and e-bike drive systems, serving e-bikes, electric scooters, electric bicycles and electric motorcycles.
Today, Star Union is an integrated supplier of core two-wheeler components and system solutions, combining product development, key component manufacturing, system integration, quality validation and global customer service. With its R&D and manufacturing base in China, supported by sales offices, warehouses, technical support and after-sales service networks in key markets, Star Union provides long-term support to global B2B vehicle brands, shared-mobility operators and other customers across the two-wheeler industry, from product development through mass production.
"E-bike E-components Expert" has long been Star Union's core brand message. It reflects the company's expertise across multiple component categories and its continued development from a single-component supplier into a provider of coordinated product and system solutions.
Star Union is also the starting point of the family's industrial development and remains its core manufacturing business. Family shareholders have also invested in biopharmaceuticals, finance and other sectors. These businesses are legally and operationally independent from Star Union, and some are minority investments. This cross-industry experience has broadened the family's capabilities in long-term management, corporate governance, capital planning and risk management.
Brands and Development
The STAR UNION brand is the company's primary brand for international markets and is widely used for export business, global customer projects and international marketing. As the company's international business has grown, the STAR UNION brand has also become increasingly recognised within China's two-wheeler industry.
WUXING is the company's long-established domestic brand, mainly used for China-standard electric two-wheeler products. Within China's two-wheeler industry, the company is also commonly referred to by this Chinese name.
SUHR is the company's premium performance brand, currently focused on high-performance and competition-level hydraulic braking products. In the future, SUHR may expand into other premium products, such as mountain bike grips, while maintaining its high-performance and competition-level positioning.
MGM is Star Union's product and technology brand for its magnetic gear mid-drive motor.
As the two-wheeler industry continues to move toward electrification, smart functions and higher performance, Star Union has continued to expand its product and technology capabilities. The company entered the two-wheeler lighting systems business in 2012. It established the Display Division in 2016 to develop e-bike displays, display terminals and HMI products. In 2017, it established the Drive System Division and the Hydraulic Disc Brake Division, expanding into e-bike mid-drive motors and hydraulic braking systems.
In recent years, Star Union has continued to develop and mass-produce electric motorcycle lighting, TFT displays, premium throttles, combination switches and high performance braking products. The company is steadily expanding its electric motorcycle component platforms and has also introduced the next-generation MGM magnetic gear mid-drive motor.
Company Scale and Manufacturing Bases
Star Union employs more than 1,300 people, including over 150 R&D and engineering professionals and more than 90 employees in quality management, inspection and other quality-related roles. The company currently operates two manufacturing sites in Meicheng, Jiande, Zhejiang. The existing factory is located in the Meicheng Industrial Development Zone and has approximately 51,200 square metres of buildings and supporting facilities. It has long served as the company's main base for product development, manufacturing, assembly and operations. The new factory is located at No. 1 Zhongyue Road, Nanfeng Industrial Zone, Meicheng, Jiande. It covers approximately 100 mu (about 6.7 hectares), with a planned total floor area of around 140,000 square metres. About 65% of the first phase has been completed, and preparations for the second phase are under way. The full project is scheduled for completion by the end of 2027. Once completed, the equipment and teams at the existing factory will gradually move to the new site, bringing R&D, manufacturing, logistics and management resources together in one location.
All of Star Union's main manufacturing operations are currently based in China, supported by the country's complete supply chain, manufacturing ecosystem and engineering talent. R&D and Engineering Capabilities
Star Union has R&D and engineering teams covering industrial design, mechanical and structural engineering, electronic hardware, embedded software, optical engineering, electromagnetic design, hydraulic braking systems, manufacturing engineering, automation, tooling development and reliability validation. R&D resources are embedded within each product division, allowing engineers to work closely with customer projects, product platforms and manufacturing operations and to turn customer requirements into practical product solutions. Sales are centrally managed at company level, and a central Quality Centre supports quality management across all divisions. An independent Test Centre serves the entire company, providing shared support for product development, reliability validation and quality failure analysis.
By combining specialised product-division R&D with shared company-level capabilities, Star Union can continuously develop standardised product platforms while also supporting OEM, ODM and joint-development projects based on vehicle applications, regulations, brand positioning and system interfaces. Star Union holds more than 300 invention, utility model and design patents.
Manufacturing and Process Capabilities
Strong in-house manufacturing is a key foundation of Star Union's long-term development. The company has built an integrated manufacturing system covering tooling, aluminium die casting, machining, CNC machining, automated polishing, injection moulding, surface treatment, electronic assembly, hydraulic brake assembly, motor production and end-of-line testing.
Its main manufacturing equipment includes approximately 20 aluminium die-casting machines, 180 machining units, 41 CNC machines counted separately, 16 automated polishing machines, 101 injection-moulding machines, two automated powder-coating and surface-finishing lines, and 36 sets of equipment used for magnetic gear component production, winding, motor assembly and end-of-line testing.
Lighting and display products are assembled in cleanroom production areas to meet the process stability and environmental requirements of electronic, optical and appearance-sensitive products.
With its long manufacturing experience and large-scale production capability, Star Union has a combined annual capacity of up to 30 million throttles and brake levers across its China-standard and international-standard product lines. This enables the company to support large vehicle manufacturers and shared-mobility projects with high-volume deliveries.
These in-house resources allow Star Union to consider materials, tooling, manufacturing processes, cost and mass-production feasibility from the early design stage, while maintaining strong control over key components and critical processes. From product concept and engineering design to tooling, prototyping, production launch and quality validation, the company has built a comprehensive product realisation process.
Core Products and System Capabilities
Star Union products are used in e-bikes, electric scooters, China-standard electric bicycles and electric motorcycles. Its main product areas include controls and HMI components, hydraulic braking systems, lighting systems, displays and HMI terminals, and e-bike mid-drive systems.
In controls and HMI components, Star Union develops and manufactures throttles, thumb throttles, motor cut-off brake levers, standard brake levers, combination switches, control switches and grips. It also has development and mass-production capabilities for premium electric motorcycle throttles and combination switches. Products can be customised in appearance, operating feel, functions, connectors, cable lengths, waterproofing, communication interfaces and mechanical structure.
In hydraulic braking systems, Star Union serves e-bikes, electric scooters, urban mobility vehicles, off-road electric motorcycles, high-performance electric motorcycles and the mountain bike aftermarket. Its products include hydraulic brake systems, calipers, brake levers, rotors, brake pads, adapters and service parts. The company continues to expand its cost-effective e-bike brake platforms, high-performance electric motorcycle braking systems and SUHR competition-level product range.
In lighting systems, Star Union offers e-bike headlights and rear lights, electric scooter lighting products, and electric motorcycle headlights, rear lights and turn signals. Its capabilities include industrial design, structural engineering, electronics, optical engineering, thermal management, tooling, cleanroom assembly and product validation. Products can be customised to meet different market regulations and customer requirements.
In displays and human-machine interfaces, Star Union offers LED, LCD and colour e-bike displays, control switches, TFT electric motorcycle displays and related HMI terminals. The Display Division has capabilities in electronic hardware, embedded software, mechanical design, user-interface development, software version management and customer-specific development. It continues to strengthen its electric motorcycle smart-display and two-wheeler HMI platforms.
In drive systems, Star Union focuses on e-bike mid-drive motors and related system solutions. Its current product platforms include conventional mid-drive motors and the MGM magnetic gear mid-drive motor. The company can also integrate displays, sensors and related system components to support complete mid-drive system projects for vehicle manufacturers.
For electric motorcycles, Star Union already has development and mass-production capabilities for lighting, TFT displays, throttles, combination switches, brake levers and hydraulic braking systems, and it is continuing to expand these product platforms. Its drive-system business remains focused on e-bikes, and electric motorcycle motors and motor control systems are not currently offered as mature production products.
With coordinated capabilities across multiple product divisions, Star Union can supply several key components for the same vehicle platform. This helps vehicle manufacturers reduce development coordination across multiple suppliers and improves product compatibility, project execution and quality management.
MGM Magnetic Gear Mid-Drive Motor
MGM is Star Union's next-generation e-bike mid-drive motor and the world's first magnetic gear mid-drive motor developed for e-bike applications.
It uses a coaxial architecture and transfers power through contactless magnetic coupling, creating a friction-free transmission. The result is high efficiency, high reliability and extremely quiet operation, delivering a smooth and natural riding experience.
MGM is designed for e-bikes that require refined power delivery, low noise, high reliability and strong system integration. It is currently being prepared for mass production, which is planned for the first quarter of 2027.
Quality Management and Testing Capabilities
Star Union began implementing ISO quality management practices in 1999 and is currently certified to ISO 9001. Through many years of serving domestic and international vehicle manufacturers, the company has developed a quality management system covering product development, purchasing, supplier management, manufacturing, process inspection, final inspection and after-sales service.
The central Quality Centre coordinates quality standards, customer quality issues, major failure analysis and cross division improvement. The Test Centre is managed in line with the relevant principles and technical requirements of ISO/IEC 17025. Its capabilities cover mechanical, electrical, environmental, optical, endurance, waterproofing, vibration and other reliability tests.
Depending on the product, target market and customer requirements, Star Union products can be developed, tested and certified in accordance with CE, EMC, RoHS, EN 15194, E-Mark, K-Mark, CCC, CQC and other applicable standards and regulations. Certification status is confirmed separately for each product model and target market.
For key products such as mid-drive motors and hydraulic braking systems, Star Union is also applying stricter industry practices to strengthen product development, process control, supplier management and quality traceability.
Global Sales and Service Network
While its R&D and manufacturing operations are based in China, Star Union continues to strengthen its global sales and service capabilities.
StarUnion E-bike Components GmbH is the company's wholly owned German subsidiary. It operates an office and warehouse and supports European sales, customer technical service, K-Mark certification for lighting products, warehousing, after-sales repair and spare-parts support. It is an important platform for Star Union's local service capabilities in Europe.
Star Union Innovations Limited mainly supports the company's global e-commerce and cross-border business. Star Union also operates sales offices with warehousing or customer-support functions in the United States, Vietnam, Taiwan, Tianjin, Jiangsu, Zhejiang, Guangdong and Chongqing. By combining its China-based manufacturing operations with local sales, warehousing, technical service and after-sales support, the company can respond more quickly to customer projects, coordinate deliveries and handle service and repair needs.
Star Union has served more than 380 customers in China and over 157 international customers, covering Europe, North America, Asia and other major two-wheeler markets.
Selected Customers and Projects
Star Union works directly with a wide range of international and Chinese two-wheeler brands, shared-mobility operators and industry customers. Selected customers and projects include Specialized, Trek, Giant, Lectric, KTM, Accell Group, CUBE, Decathlon, Lime, Super73, Talaria, 79BIKE, Sur-Ron, Apollo, VinFast, Yadea, Xiaomi, Meituan, DiDi and SegwayNinebot. OEM, ODM and Joint Development
Star Union offers both mature standard products and customised OEM, ODM and joint-development services based on vehicle positioning, regulatory requirements, brand design and system interfaces.
The company can support the complete product development and delivery process, including market and customer requirement analysis, product definition, industrial design, structural engineering, electronic hardware and embedded software, optical and electromagnetic design, tooling, engineering samples, reliability validation, pilot production, mass production, quality traceability and after-sales support.
By combining product development, engineering, manufacturing, quality management and local service, Star Union aims to grow from a component supplier into a long-term product and system partner for its customers.
Mission and Vision
Star Union's mission is:
To make two-wheeled mobility better worldwide.
Star Union's vision is:
To become a leading global brand in two-wheeler components and systems.
Looking ahead, Star Union will continue to invest in product development, manufacturing technology, quality systems, talent and global customer service as two-wheeled mobility becomes more electric, intelligent, high-performance and global. Building on its R&D and manufacturing capabilities in China, the company will provide global two-wheeler manufacturers with more complete, reliable and competitive component and system solutions.