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Seocho-gu,Seoul,South Korea South Korea
联系人 Bokseong Kim
办公地址 Seocho-gu, Seoul
The world's first transmission bicycle without chain 'Hank' Hank is the world's first bicycle that runs without having any power tran
The worlds first transmission bicycle without chain Hank Introduction of Hank Creation of Direct Bike Hank It is a new type of bicycle created for bi
Inventing the worlds first transmission hub directly connected to crank, Direct Transhub Direct Bike was made possible by Bygens innovation in technol
The worlds first transmission bicycle without chain Hank Introduction of Hank Creation of Direct Bike Hank It is a new type of bicycle created...
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