欧美????BBBB人用手_久久久久久99九九九精品网站_超级碰碰人妻中文字幕_国产三级乡下_亚洲精品无码久久久久冒白浆

Transmission gear bikes come out
     The bicycle gear chain drive gear drive to both effort and durable. The chain drive to open fully enclosed transmission, not only lubrication conditions are good, and transmission components are protected from dust and the wind and rain erosion. The pawl beyond flywheel flywheel to ensure the high-precision gear drive. The single cable twist grip gear shift cable to dual turn to ensure the reliability of the gear position.
     This is a non-chain light bike. At present, product demand, have been exported to Germany, New Zealand, Japan and Hong Kong, Taiwan and other countries and regions. This article comes from Jiangsu New Silver Leaf Transmission Ltd.

Links:
Gear www.jiudekm.cn
Pinion www.jiudekm.cn