- QuocThang Telescope Store - QTS - (www.Telescope.com.vn , www.Kinhthienvan.com)
- Telescope,Binocular,Microscope.
- Address:Ha Noino 2 Ngo 25, Culoc Street, Thanh Xuan
- Tin Duc Co., Ltd
- Transeiver, Binocular, Night Vision, Navigation (GPS) , PABX.
- Address:No 2 / 36 Lane Nguyen Hong
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