Which country has bought three JF-17 Thunder fighter jets from Pakistan in May 2021?

Explanation
Pakistan handed over the three aircraft to Nigeria during a ceremony on May 20, t o mark the 57th anniversary of the Nigerian Air Force (NAF).  The Pakistani designation "JF-17" stands for "Joint Fighter-17" Tthe "Joint Fighter" denoting the joint Pakistani-Chinese development of the aircraft And the "-17" denoting that, in the PAF's vision First flight : 25 August 2003 Introduction : 12 March 2007 Produced: In China: June 2007 – present In Pakistan: January 2008 – present