| q. | Revenue recognition |
Sales revenue is recognized at the moment when the risks and benefits of ownership of crude oil, refined or gas products, and derivative and petrochemical products are transferred to the customers who acquire them, which occurs as follows:
| • | in accordance with contractual terms; |
| • | the moment at which the customer picks up product at PEMEX’s facilities; or |
| • | the moment at which PEMEX delivers the product to the delivery point. |
Services rendered are recognized as services income when the customers accept the receipt of the services.