- Seong Duck Techwin
- Address:#74, Seobu-ro 1409beon-gil
- K-TOPVALVE CO., LTD
- Address:# 582-4 hwa jeon dong
- KOREA GAS ENGINEERING
- Address:# 4103, 67, Imhak-dong,
- HAEIN TRADING CO.
- Address:1320ho dae heung interbil jungang dong
- Sammi Machinery Co.
- Address:437-1,Jinae-dong ,Gimhae-si
1