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How does the bicycle trigger shifter perform differently on mountain bikes, road bikes, and city bikes?In mountain bikes, this bicycle trigger shifter mainly demonstrates excellent response speed, durability, and ease of operation. Mountain bi...
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What type of mountain bike riding is this MTB Bicycle Cassette Sprocket suitable for?This MTB Bicycle Cassette Sprocket is perfect for off-road riding because it offers a wide gear ratio range to cope with changing terrain. T...
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How does the Double piston mechanical disc brake set improve riding safety?The Double piston mechanical disc brake set significantly increases the contact area between the brake pad and the brake disc through the sy...
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How to ensure the rider's flexibility when braking or accelerating with an Full Alloy Bicyle Brake Lever?The Full Alloy Bicyle Brake Lever adopts an ergonomic streamlined design, which can naturally fit the curve of the rider's palm and reduce t...
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Founded in 1991, Ningbo Sunrun Bicycle Co., ltd & Its branch company Ningbo Tongkin Technology Co., Ltd.
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E-Bike Motor Manufacturer
About SunRun
Ningbo Tongkin Technology Co., Ltd. is a China E-Bike Motor Manufacturer and E-Bike Motor Factory, 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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