Song Cong is an industrial city, the southern economic, administrative, cultural - social center of Thai Nguyen province is an important traffic hub for socio-economic development exchange in the Northeast. Song Cong city currently has $109,409$ inhabitants, concentrated in urban centers, factories and enterprises Song Cong city bordering Thai Nguyen city to the north; Phu Binh district to the East and Pho Yen town to the West and the South. The city has a quite convenient location: $65km$ from Hanoi to the north, 15km from Thai Nguyen city to the south, $45km$ from Noi Bai international airport, 17km from Nui Coc lake. The terrain is relatively flat, characterized by the midlands, the base gradually sloping from North to South and from East to West, with many tops of several hundred meters. The highest place in the inner city area is Tao mountain (54 m), the average elevation is usually $15-17$ m.