Ban Quan Ly Cac Cong Trinh Cong Cong Huyen Thanh Son Address: Ha Son Street, Thanh Son Town, Thanh Son District, Phu Tho Province Enterprise code: 2600849800 Phone: 02103978668 Representative: Dao Ngoc Hai Thanh Son Town, Thanh Son District, Phu Tho ProvinceFounding date: 26 - 6 - 2012