- Dae Kwang Engineeing
- Address:362-1,Soha 2-dong ,Gwangmyeong-si
- FLOWMAX CO., LTD.
- Address:Room 302 Dongin Building, 1068-23, Hwagok 3-dong, Gangseo-gu
- SEGGI CENTURY
- Address:
- Seodo I&C
- Address:Room204, HanBit building, 747-20, yeuksam-dong, kangnam-ku
- Silverex
- Address:17l 81b, Namdong Industrial Complex, Namdong-Gu
- Tyent
- Address:Ungsang-dearo, Yangsan, Gyeongnam, South Korea
- Dongwoo Ind.
- Address:552 Hwasimri, Soyangmyun,
- chungsoo
- Address:92-3 donam-dong
- ZEUS Tech
- Address:
- ONDOL PARK
- Address:240, Usu-ri, Myeongseok-myeon
- elistech co., ltd.
- Address:142 Ilsanro
- GAIACOM
- Address:Greenville Jugong Apt. , Gojan-dong, Danwon-gu
- Woory Industry
- Address:516-1,YONGDUCK-RI,Giheung-eup ,Yongin-si
- INUS Partners Corporation
- Address:Saemmaelgil
- YOUNGWOO WATER PURIFIER
- Address:Rm. 1113 SeochoWorld B / D. , # 1355-3 SeochoDong, SeochoGu,
- Koreawaters co.,
- Address:462 banghwa-dong, kangseo-gu
- Hwasung
- Address:Rm.1716 Windstone B/D,275-2, Yangjae-dong
- Sungho Boiler Co., LTD
- Address:134 Sosabon-dong, Sosa-gu
- Kusshand Co.,Ltd.
- Address:1424-2,Seocho-dong ,Seocho-gu
- Han Cho Company
- Address:1468-10,Gwanyang 2-dong ,Dongan-gu, Anyang-si