Factory Workshop and office
Since 2003, we start to do rechargeable battery ni-mh .
Since 2009, we start to do Li-ion and li-polymer battery.
Since 2012, we start to do power bank and car jump starter.
Since 2014,we start to do self balance 2 wheels electric scooter;
in May, 2015, Pinsum attended HK electronic show;
In Mar,2016, Pinsum attended Cebit show.