Repair Of Valve Doors, Opening And Closing Machinery Equipment, Electricity To Operate Regulating Culverts K6+238, K15+753, Cam Xe Aqueduct K28+044, Water Level K37+501, Water Intake Culverts K15+710, K15+593 And Railings Of Bridges Across The Canal At K21+917 On Phuoc Hoa Canal