OBS_VALUE: Bid preferences are granted to bidders:- who propose domestic expenses incurred by the execution the contracts which account for more than 25% of the total value of the contracts.- who employ total female workers and wounded soldiers or invalid employees accounting for above 25% and signing minimum 03 month’s labour contracts - who are small enterprises - who are in the local where the contract will be awarded.In case bidders have access to more than one bid preference, they are only allowed to get access to the optimal bid preference.After all these bid preferences above have been granted and there are still proposals in the same rank, priority for bidders who quote more domestic expenses or employ more local employees (based on their wage and salary).