The contract is worth an estimated 38.4 million levs ($21.8 million/19.6 million euro), VAT excluded, Stolichen Electrotransport said in a notice on Monday.
The contract also envisages carrying out the necessary training of Stolichen Electrotransport staff related to the exploitation and maintenance of the vehicles.
Offers will be ranked based on price, which has 56% weight in the final mark, and technical criteria.
(1 euro = 1.95583 levs)