Highcharacter Science and Technology Development Co., Ltd. makes PCB Designs using Allwinner here showing off how they make the Allwinner A33 designs, including also doing software optimizations, hardware design, tooling designs and more.
You can contact the Highcharacter PCB Design House here:
http://www.szhklt.com/
lilisuo@szhklt.com or szhklt@szhklt.com
Phone:+86 755-83759988 or +86 755-86699016
Mobile: +86 13923781353
QQ: 1019628089