- Lantech International
- Address:Wonmi-Ku, Dodaing-Dong
- Foretec c&s corporation
- Address:1391-29 Sinnam-dong
- Lantech
- Address:
- NAM YANG Tech Co.Ltd.
- Address:woolim lions valley 2 309, gasan-dong
- Unixdia
- Address:r / m 203, samwon, 415-8, sungnae-dong, gangdong-gu
- Dae Jin Diamond Co., Ltd.
- Address:
- YOUNGCHANG SAW CO., LTD.
- Address:51 Block 6 Lot, 443-5, Nonhyun-Dong,
- Diatool.Exe
- Address:1880,Sindang-dong ,Dalseo-gu
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