- 30-4 ,LMT, COMPANY
- Address:468 Le Duan
- cong ty tnhh hoang gia
- Address:xa loi ha noi
- demirstone pty ltd
- Address:le duan
- Ha Tinh Minerals & Trading Coporation
- Address:Vu Quang
- HOANG PHU IMPORT EXPORT .,JSC
- Address:No 30b, Doan Thi Diem Str, Dong Da Dist
- Vietnam Quartz JSC
- Address:3rd floor, CDS building, no 33, alley 61, Lac Trung st, Hanoi, Vietnam