 The Russian Air Force has ordered 98 production units , designated Su @-@ 35S , of the newly revamped Su @-@ 35 . Both Su @-@ 35 models are marketed to many countries , including Brazil , China , India , Indonesia , and South Korea ; China ordered the Su @-@ 35 in late 2015 . Sukhoi originally projected that it would export more than 160 units of the second modernized Su @-@ 35 worldwide . 
