Item 1: Contracting Of The Preventive Maintenance Service Of Heavy Vehicles At All Costs - Contracting Of Preventive Maintenance Service Of Heavy Vehicles And Machinery At All Costs For The Execution Of Work Of The Intervention Work Plan Of The Lm-826 Neighborhood Road, Santiago De Anchucaya ¿ Huarochiri, District Of Huarochiri ¿ Province Of Huarochiri ¿ Lima"