- Korea Quartz Technology Co., Ltd
- TCXO,PECL Output XO,VCXO,Crystals,Programmable XO,Programmable Crystal Oscillators,HCMOS/TTL Crystal Oscillators,Quartz Crystal Units,Voltage Controlled Crystal Oscillators (VCXO).
- Address:25-11, Jann-Dong, Yuseong-Gu
- JNK, co. ltd
- JNK360,JNK370,JNK390,JNK7000,electronic controlled school system.
- Address:2Na-607-1 (106) , 173 gil, Gongdan 1-daero,
- Technomart Inc.
- ULT Freezers,Datalogger,Controlled rate freezer.
- Address:197-7,Guro-dong ,Guro-gu
- Irech C&D Inc.
- VCXO (Voltage Controlled Crystal Oscilla) ,OSC (Oscillator),Hybrid I.C. 1,HIC (R/C Networks),Hybrid I.C. 2.
- Address:889-3,Gwanyang 2-dong ,Dongan-gu, Anyang-si
- Ehwa Technologies Information Co.,Ltd.
- Rectifier (100A),UPS (Super2000),UPS (Series8000),UPS (EV3 Series),Inverter (AC Speed Control Equipment),Battery Charger (Thyristor Controlled),Transfomer (Cast resin Dry type),EV3 Series,Transformer,Inverter,Rectifier.
- Address:272-20,Taejeon-dong ,Gwangju-si
- SEOAN ELECTRONICS CO., LTD.
- Crystal oscillator,TCXO,VCXO,TCVCXO,PECL Oscillator,Crystal Oscillators, Voltage controlled oscillator,VCXO,TCXO,Crystal Oscillators.
- Address:Yatab-Dong, Bundang-Ku Techno Park C-809
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