KYIV, Dec 16 – Naftogaz Ukrayiny from January 1, 2020 will offer a service of selling natural gas with 25% advance payment, Head of Naftogaz integrated gas business unit Andriy Favorov said.

"By the way, I am ready to announce it now. From January 1, we will change the payment terms for the gas sold. Our product, which we put up for sale and is in demand, is sold with 100% prepayment. Now we will move away from it and make 25% of prepayment," he said in an exclusive interview with Interfax-Ukraine.