QiYi

QiYi is one of the best speedcube manufacturers out there. It has been active since 2013.

2x2:

 * Cavs
 * Dimension 2x2
 * QiDi
 * WuXia
 * QiDi S
 * Valk 2

3x3:

 * Sail
 * Thunderclap
 * Thunderclap V2
 * Bullfight
 * Dimension 3x3
 * Mini 3x3 42mm
 * Warrior
 * Warrior W
 * Keychain Cube
 * Valk 3

4x4:

 * Dimension 4x4
 * QiYuan
 * Sail 4x4
 * Storm
 * Thunderclap 4x4
 * WuQue
 * QiYuan S
 * Thunderclap Mini 4x4

5x5:

 * Dimension 5x5
 * QiZheng
 * WuShuang
 * QiZheng S

6x6:

 * WuHua
 * WuHua V2

7x7:

 * QiXing
 * QiXing S
 * WuJi

Megaminx:

 * X-Man Galaxy
 * X-Man Galaxy V2
 * QiHeng
 * QiHeng S

Pyraminx:

 * QiMing
 * QiMing A
 * X-Man Bell

Square-1:

 * QiFa S
 * X-Man Volt

Skewb:

 * X-Man Wingy Skewb
 * QiCheng
 * QiCheng A