不敢担责 共享单车儿童座椅网上热销 出事究竟谁担责?

共享单车儿童座椅网上热销 出事究竟谁担责?  

The ongoing bike-sharing boom in China has led detachable front-mounted child bicycle seat to bee a bestseller online
raising safety and legal concerns.
On Taobao
an e-merce site run by Alibaba
such a child bicycle seat kit generally includes a support bar
a child bike saddle
a pair of foot guards
a front armrest and necessary clamps.
The installation almost requires no tools
as the clamps can be simply attached on the bike's original seat post.
由于螺丝钳很容易即可被装在共享单车固有的车座柱上，安装几乎无需用到任何工具。
Most of the Taobao vendors claim their seats are made of carbon steel
thus able to hold up to 60 kg. The bike seat accessories are usually priced beeen 40-60 yuan and mostly decorated with cartoon prints.
However
most of the vendors fail to provide legal quality certificates
and disclaimers are posted asserting the sellers won't be held responsible for any accidents involving the bikes and child seats.
Online customer reviews show that the seats are "shaky" even after proper installation.
Several bike-sharing panies have declared that carrying others while riding their bikes violates the one-user only agreement
warning that those who break the rule could assume full responsibility in case of accidents.