xuyancheng

北京清华附中 Joined May 30th, 2014
1 Instructables 6,912 Views 0 Comments 3 Followers

徐延成清华附中 G1305 15810604685 xuyancheguge@gmail.com 徐延康清华附中 G1302 15810604698 15810604698@139.com

xuyancheng's Instructable

用旧笔记本电脑电源改造8口USB充电器