The Chinese army leadership has begun converting heavy Y-20B transport aircraft to domestically developed WS-20 engines. Previously, these aircraft flew with Russian D-30KP-2 power plants.

Domestic engines are inferior to the WS-20 in thrust – 118 kN versus 128 kN. Also, the maximum payload capacity of the aircraft has increased from 60 to 66–70 tons. Now, the Y-20B can transport the latest Chinese "Type 99A" tanks with full ammunition without restrictions.

Russia supplied China with a total of 463 D-30KP-2 engines between 2009 and 2020. The total value of all contracts exceeded $1.4 billion.

Deliveries were carried out in three major waves through Rosoboronexport, with ODK-Saturn acting as the manufacturer.

It should be noted that Russian Il-76MD and Il-78 transport aircraft still fly with D-30KP-2 engines.