- DKA
- Address:04 Nguyen Dinh Chieu, district 1
- International Investment Connection Enterprise Trading JSC
- Address:Building No82 Str. Bach Mai, Hai Ba Trung District, Hanoi, Vietnam
- Nghe An Mineral Joint Stock Company (NAMCO)
- Address:No.2 Le Hong Phong, Vinh, Nghe An, Vietnam, Vietnam
- HAMESCO JOINT STOCK COMPANY
- Address:Vietnam
- ALTA Group
- Address:702-D10 Giang Vo
- VINAMIC VIET NAM JOINT STOCK COMPANY
- Address:Hoang Quoc Viet