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Waterproof bike lock / tools

Waterproof bike lock
Waterproof bike lock

The main idea is to solve this long bike lock outdoors cause rust and sand into the cylinder problem. And unlock a
whole new way, people can quickly and easily open the lock when the busy life to bring to mind a little time to rest.
The main idea is to solve this long bike lock outdoors cause rust and sand into the cylinder problem. And unlock a whole new way, people can quickly and easily open the lock when the busy life to bring to mind a little time to rest.

University

Chongqing University

Chongqing University
Chongqing, China

Design

Chongqing University

Chongqing University
Chongqing, China

Zhou Peng He Yu