- iSing corporation
- ekaraoke, singer, magicsing, Karaoke, music, wireless microphone.
- Address:341-13, hongje-1ding Seodaemun-gu Seoul 123-091 Korea
- Penz Karaoke
- Magicsing, multimedia, entertech, korea.
- Address:23 Peter Lippa Drive Kawerau New Zealand
- Dreamtec Corporation
- magicsing, gigaphone, dreamtec, oilpr.
- Address:304, 3rd Fl. Samseong Bldg, 168, Samseong-dong Gangnam-gu Seoul Korea
- Inajiffy
- entertech, magicsing, magic sing, magic mic, magicmic, microphone, videoke, songchip, karaoke.
- Address:#81 Governor Pascual Avenue Malabon Metro Manila 1470 Philippines
- Richen Tech
- Portable karaoke, MagicSing.
- Address:#1008 IT tower A dong, Kum-kang Penterium, 333-7 Sangdaewon-dong Jungwon-Gu, Sungnam-shi Gyeonggi-do 462-807 Korea
- Zhuhai Sanjin Industrial Co.,Limited
- karaoke, karaoke player, dvd changer, magicsing.
- Address:nanping technology zone pingxi 7 road,No.3 unit Zhuhai Guangdong China
- Magic-Karaoke UK
- Magicsing Karaoke.
- Address:4 The Oval
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