| 1 | BINH MINH MECHAICAL CASTING JSC | 2021 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Le Van Tinh | Cast iron, steel | Private economic |
| 2 | TRUONG HAI CNC MECHANICAL TRADING CO., LTD. | 2021 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Duong Van Truong | Cast iron, steel | Private economic |
| 3 | VIET HOANG MECHANICAL AND TRADING CO., LTD. | 2017 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Le Son Khanh | Mechanical; metal treatment and coating | Private economic |
| 4 | ANH TU METAL CO., LTD. | 2006 | Lot 2 CN-05, Dong Coi Industrial Complex, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Pham Thi Mo | Wholesale of metals and metal ores | Private economic |
| 5 | NAM TRUC CO., LTD. | 2007 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Pham Van Bay | Metal casting | Private economic |
| 6 | MINH THANH CONG CO., LTD. | 2013 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Pham Thi Thuy | Manufacture of other metal products n.e.c | Private economic |
| 7 | AN PHAT TRADING - MECHANICAL CO., LTD. | 2016 | Dong Coi concentrated industrial cluster, Nam Giang town, Nam Truc district, Nam Dinh, Vietnam | Nguyen Quynh Diep | Mechanical; metal treatment and coating | Private economic |
| 8 | VIET THANG CO., LTD. | 2002 | Dong Coi Industrial Cluster, Nam Giang Town, Nam Truc District, Nam Dinh, Vietnam | Le Van Thang | Mechanical; metal treatment and coating | Private economic |
| 9 | VINH THUC CO., LTD. | 2003 | Dong Coi concentrated industrial cluster, Nam Giang town, Nam Truc district, Nam Dinh, Vietnam | Nguyen Huu Thuc | Mechanical; metal treatment and coating | idpvn.com |
