| Headquarters in Vietnam (Hai Phong) | |
| GST Company Limited (Công ty TNHH Dịch Vụ Kỹ Thuật Tiêu Chuẩn Chung) |
|
| Contact Person: | CS001 (Customer Service) |
| Mobile: | +84 (0) 899 263 188 |
| Phone: | +84 (0) 225 883 651 |
| E-mail: | gst.cs@gstclab.com gst_cs0899263188@gstclab.work |
| Website: | www.gstciab.com |
| Address: | No. 30, L2 Area, South of Lach Tray River, Anh Dung Ward, Duong Kinh District, Hai Phong, Vietnam |

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