“Constant Power (HK15)” Online Video Trailer

by Shopmaster on 2016/12/31

Make the body like steel of constant power, but at the same time the joint can turn

This video is available on the chinese site with more chinese explanation. http://www.shiyongquanfa.cn/index.php?p=34521
Presenter: Chen Zhonghua   Length: 5 min.   In: English   Year: 2016  Difficulty:2/5  At:Hong Kong

Constant Power (HK15)
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