A型中轴
Type-A B.B.AXLES

B型中轴
Type-B B.B.AXLES

C型中轴
Type-C B.B.AXLES

D型中轴
Type-D B.B.AXLES

电动自行车中轴
ELECTRIC BICYCLE B.B.AXLES

密封中轴
SEALED BALL BEARING B.B. AXLE

 

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