![Avatar of Trịnh Duy Hải](https://vietnam.congty.org/avatar/58S794F1F6-default.jpg)
Trịnh Duy Hải
Position: Author / Director
Address: Số 15, ngách 177/10, tổ 23, Phường Định Công, Quận Hoàng Mai, Hà NộiCompany:
Viet Nam Ls Joint Stock Company
Phone:
![](http://vietnam.congty.org/i/GpDgOzHhp3EixMBrEG-2rw%3D%3D/1.jpg)
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Position: Author / Director
Address: Số 15, ngách 177/10, tổ 23, Phường Định Công, Quận Hoàng Mai, Hà NộiCompany:
Viet Nam Ls Joint Stock Company