| | Transport Engineering Construction And Quality Management Bureau | | No. 24, Lane 55 - Le Dai Hanh Street - Le Dai Hanh Ward - Hai Ba Trung District - Ha Noi | 84-4-9760.315 | 84-48217.556 | | | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.228 | ENCOJOCOM 228 | Buildings CT4 Room 703 + 704 My Dinh - Me Tri - Tu Liem - Ha Noi | 043.7855.430 | 043.7855.425 | Congtycp228@gmail.com | | | Hạch toán Độc lập |
| | Engineering Construction No.246 Joint Stock Company | | Room 306, 3rd Floor 262 House - Nguyen Huy Tuong street - Thanh Xuan Trung Ward - Thanh Xuan district - Hanoi | 84-4-5575.504 | 84-4-5575.507 | | | | Hạch toán Độc lập |
| | Construction Joint Stock and Manufacturing Building Materials Company No. 405 | | Nguyen Huu Canh Street, Hai Dinh Ward, Dong Hoi City, Quang Binh Province | 84-52-840.378 | 84-52-840372 | | | | Hạch toán Độc lập |
| | Engineering Construction No.419 Joint Stock Company | EC NO.419 JS CO | Number 01, Nguyen Du Street, Vinh City, Nghe An Province | 84-38-855257 | 84-38-856265 | | | | Hạch toán Độc lập |
| | | | No. 19, Lane 1043, Giai Phong Street, Thinh Liet Ward, Hoang Mai District, HCMC. Hanoi | 84-4-6420.368 | 84-4-6420.382 | | | | Hạch toán Phụ thuộc |
| | Engineering Construction Joint Stock Company No.422 | | Number 29, Quang Trung Street, Vinh City, Nghe An Province | 84-38-869386 | 84-38-856181 | | | | Hạch toán Phụ thuộc |
| | Engineering Construction Joint Stock Company No.499 | | Number 62-68 50 Street KP9 , Tan Tao Ward - Binh Tan District - Ho Chi Minh City | 84-8-7540617 | 84-8-7540477 | | | | Hạch toán Phụ thuộc |
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| | | | Number 2, Nguyen Du Street, Vinh City, Nghe An Province | 84-38-3557516 | 84-38-3557516 | | | | Hạch toán Phụ thuộc |
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| | Construction and Trading Joint Stock Company 423 | CONSTRAD 423 | Number 61, Nguyen Truong To Street, Vinh City, Nghe An Province | 84-38-3853916 | 84-38-3853395 | infi@constrad423.com.vn | www.constrad423.com.vn | | Hạch toán Độc lập |
| | Construction, and Trading Investment Joint Stock Company 424 | | Number 2, Nguyen Sy Sach Street, Vinh City, Nghe An Province | 84-38-3594916 | 84-38-3831633 | | | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.465 | | Number 6, Phan Boi Chau, Vinh City, Nghe An Province | 84-38-3853876 | 84-38-3854782 | | | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.471 | | Number 9, Tran Nhat Duat Street, Vinh City, Nghe An Province | 84-38-3842356 | 84-38-848964 | | | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.473 | | Number 7, Nguyen Canh Hoan, Vinh City, Nghe An Province | 84-38-832229 | 84-38-532320 | | | | Hạch toán Độc lập |
| | Civil Construction Joint Stock Company No.475 | | No. 198B, Truong Chinh Le Loi, Vinh City, Nghe An Province | | 84-38-3539560 | | | | Hạch toán Độc lập |
| | Joint Stock Company No.479 | JCO 479 | Number 54, Nguyen Du Street, Vinh City, Nghe An Province | 84-38-855478 | 84-38-856376 | cty479@hn.vnn.vn | http://cty479.com.vn | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.482 | ECC482 | No. 155 Truong Chinh street , Vinh City, Nghe An Province | 84-38-3853200 | 84-38-3854701 | giaothong482@vnn.vn | www.congty482.com.vn | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.484 | | No. 152, Truong Chinh, Vinh City, Nghe An Province | 84-38-3853512 | 84-38-3854440 | | | | Hạch toán Độc lập |
| | Engineering Construction Joint Stock Company No.492 | ECOJCOM 492 | Number 198B, Truong Chinh Str. Vinh, Nghe An | 84-38-3853804 | 84-38-3854494 | ctctgt492@hn.vnn.vn | | | Hạch toán Độc lập |
| | Transport Engineering Consultant Company No.497 | TECCO 497 | Number 72, Nguyen Sy Sach Street, Vinh City, Nghe An Province | 84-38-3832716 | 84-38-3832721 | | www.tvgt497.com.vn | | Hạch toán Độc lập |