Color mix hot end and software

(A) Color mix hotend:
混色热端

https://item.taobao.com/item.htm?spm=a1z3i.7c.footer.4&id=531968680133

Three in and one out hotend.
三进一出热端

3D printer hot end all-metal [North Five]
全金属热端【北五科技】

see: http://www.thingiverse.com/thing:1577565

QQ: 26022470
E-mail: wjl5327@qq.com or wjl005327@gmail.com

(B) Firmware and software tool:
固件和软件工具
http://www.instructables.com/files/orig/F9B/2CM8/IOVPN0PA/F9B2CM8IOVPN0PA.rar
or
https://github.com/luc-github/Repetier-Firmware-0.92