- EAON SEMICON co.,ltd
- Quartz glass(used photo-mask),Polarizer Film.
- Address:UNIT 406 SA TOWER 1026-30
- Prime GLP INC
- Fused Silica Wafers, Quartz Glass, Silicon Materials, Solar wafers, Tops/Tails, Pot scrap.
- Address:114-23, Wegacheonri, Wongokmyun
- Young Shin Quartz Co., Ltd.
- Quartz tube for CVD process in Semiconductor fabrication,Synthetic Quartz Glass Wafers,Quartz tube for CVD process in Semiconductor fabrication,Quartz boat for CVD process in Semiconductor fabrication,Synthetic Quartz Glass for Photomasks.
- Address:149-3, Hoejuk-ri, Gwanghyewon-myeon, Jincheon-gun
- Dong Bong Carbon Co., Ltd.
- Specialty graphite for electrical discharge machining,Electric heating elements made of specialty graphite for the production of high-purity quartz glass tubes ,Crucibles and dies for melting and casting,Specialty graphite for the production of hard-metal.
- Address:38-8,Gujang-ri,Paltan-myeon ,Hwaseong-si
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