The mechanism for pricing petroleum derivatives is specified in accordance with the bases approved in the system for pricing petroleum derivatives, commissions of licensees, and their Tariff No. (122) of 2019. The selling prices of petroleum derivatives are based on the global prices in the reference markets for a period of thirty days preceding the announcement of prices, plus all logistical costs of importation, transportation, storage, distribution, and others, in addition to the specific lump-sum tax imposed on petroleum derivatives as specified in System No. (107) of 2019, an amended system for the special tax. Consequently, the selling prices of petroleum derivatives are in line with global prices of petroleum derivatives, whether they rise or fall.