- Thua Thien Hue Minerals Corporatio
- Address:53 Nguyen Gia Thieu Street
- Do thanh Mineral Corporatio
- Address:14 Le Quy Do
- GP Vietnam Co., Ltd
- Address:63 Co Giang Street, Ward 1, Phu Nhuan District
- Do thanh Mineral Corporation
- Address:14 Le Quy Don
- HKG Corp
- Address:353-355 An Duong Vuong Street, ward 3, district 5
- Khang Gia Import Export Jsc.
- Address:20-22, 9A Street, Binh Chanh District, Ho Chi Minh, Other, Vietnam
- Vinaconex Trading JSC
- Address:5th Floor, Vimeco Building, Phamhung St. , Caugiay Dist.
- Kim Ngan Ltd
- Address:
- PVD TUBULARS MANAGEMENT CO., LTD
- Address:08 Nguyen Hue Street,
- HaTinh Import Export
- Address:Phandinhphung
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