- Shudu Nano-science Co.,
- Address:NO. 386 Tongji road
- Officepia Co., Ltd.
- Address:12-4 Yongmun-dong
- LK resources
- Address:kang nam-gu, nonhyoun-dong
- SB Chemical Co., Ltd.
- Address:403-3 Mocknae-Dong Danwon-Gu
- ST Chemical
- Address:# 68, Munlae-dong 3ga, Youngdungpo-gu
- NCS Global Corp.
- Address:Rm# 301, 554-27, Sinsa-Dong, Gangnam-Gu
- Sechang Chemical Co.,Ltd.
- Address:256-9,Gajwa-dong ,Seo-gu
- EG Corporation.
- Address:820, shin pyeong, chu bu
- samkwang-chem
- Address:
- Nexpril Co. Ltd.
- Address:2Ba701,
- Erae Technology & Trading
- Address:
- Palmtree Trading Co.,ltd
- Address:No. 1410, Samho Co. Ltd B Bldg, 275-6
- Tech4M
- Address:
- Daesan
- Address:Sihwa 4BA-202
- IMS CORPORATION
- Address:No. 403, Sunwoo Bldg, 1556-9, Seocho-Dong,
- E&B Nanotech.Co.Ltd.
- Address:705 Haean-ro, Sangnok-gu, Gyeonggi Techno Park Sa 3-dong
- C&G TRUST COMMERCIAL COMPANY
- Address:Duhodong
- SEANA C&T
- Address:301, 394-10, Huam-Dong, Young San-Gu
- JS JINGRUI QUARTZ R&D INC.CO
- Address:no 118, west pisan
- CHEONGGYEWON INC.
- Address:Ijang-ro 361-gil, Majang-myeon