| Jujing Electronics Co., Ltd.|
|First Game||3D Block|
|Last Game||Block Force|
|Published games by||Hwang Shinwei|
|Related companies||RCM Group|
- The cartridge shells were unique to this manufacturer. Similar but not identical molds are known to exist such as the one used by Assupo.
- The 1990 print of 3D Block, credited to RCM Group, reuse the same components (printed circuit board, and sometimes the same cartridge shell) as the 1989 release albeit not requiring the whole circuit board as the game had been reworked to work on simpler hardware. This suggests that Jujing is either RCM Group (or closely related to it) or they had closed down and the developers had obtained the remaining assets.
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