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Founded in 1991, Ningbo Sunrun Bicycle Co., ltd & Its branch company Ningbo Tongkin Technology Co., Ltd.

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OEM/ODM Folding Bike Single Chainwheel & Crank Set
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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM Folding Bike Single Chainwheel & Crank Set Supplier and ODM Folding Bike Single Chainwheel & Crank Set company was founded in 1991, specializing in the production of bicycle transmission systems, braking systems and other components. The leading products include a series of derailleurs, variable speed flywheels, high-end cassette hubs, disc brakes, brake components, cranksets and more than 300 varieties in six categories.

In 2015, in response to Made in China 2025, the company established Ningbo Dongjin Technology Co., Ltd. to develop a new internal and external variable speed transmission system, entering the first echelon of the domestic industry. "Chicheng wheel industry, quality first" is the pursuit of quality by Richeng people. The company has introduced internationally advanced key technologies such as precision cold forging, CNC machining, heat treatment, and multi-station stamping to develop transmissions with Richeng characteristics. , transmission kit, sales volume leads domestic peers. The registered brands SUNRUN, TONGKEEN and HEMU enjoy high reputation in domestic and foreign markets. The company has independent export rights, and its products are exported to Europe, North America, Central and South America, Africa, Southeast Asia and other countries and regions. Xu Mingqiang, chairman of the company, sincerely invites domestic and foreign merchants to come for negotiation and guidance.

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Industry Knowledge Extension

What are the performance advantages of Folding Bike Single Chainwheel & Crank Set's single-speed sprocket in folding bicycles?

The performance advantages of the single-speed sprocket of Folding Bike Single Chainwheel & Crank Set in folding bicycles are mainly reflected in the following aspects:
Simple structure and easy maintenance: The design of the single-speed sprocket and crank set is relatively simple, and there is no complicated transmission system, so it is more convenient to maintain. For a folding bicycle that needs to be folded and carried frequently, a simple structure means less possibility of failure and higher reliability.
Durable: Since there is no shifting system, single-speed sprockets reduce potential points of failure, thus increasing their durability. Folding bicycles often need to cope with various usage environments, and the durability of the single-speed sprocket can ensure that the vehicle can work stably under various conditions.
Lower cost: Due to its simple structure, the manufacturing cost of the single-speed sprocket and crankset is relatively low, which also reduces the overall cost of the folding bicycle. This is an important consideration for consumers on a budget.
Suitable for short-distance riding: Folding bicycles are mostly used in urban commuting, short-distance travel and other scenarios. In these scenarios, single-speed sprockets can already meet basic riding needs. For everyday short-distance riding, a single-speed sprocket is more than enough to provide a stable, reliable ride.
However, it is important to note that single-speed sprockets may not perform well in difficult road conditions or riding scenarios that require variable speed adjustment. Therefore, when choosing a folding bicycle, you need to weigh the advantages and disadvantages of single-speed sprockets and other transmission systems based on your own riding needs and habits.
Therefore, the single-speed sprocket of Folding Bike Single Chainwheel & Crank Set has the performance advantages of simple structure, easy maintenance, strong durability and low cost among folding bicycles, and is suitable for short-distance riding and daily commuting.