Pipe Laying Work To Expand Water Distribution Area For Udon Thani Provincial Public Works And Town & Country Planning Office. Land Formatting Project To Develop Areas In The City Planning Area Of ​​Udon Thani City Udon Thani Province, Area Of ​​Project Line C7 (From Phrom Prakai Road To Naresuan Road), Mak Khaeng Subdistrict, Mueang Udon Thani District. Udon Thani Province Provincial Waterworks Authority, Udon Thani Branch (P)