 Since the early 1990s , an extensive sales arrangement of the Su @-@ 35 to China has been discussed . Sukhoi officials , in 1995 , announced their proposal to co @-@ produce the Su @-@ 35 with China , contingent on Beijing 's agreement to purchase 120 aircraft . However , it was alleged that the Russian Foreign Ministry blocked the sale of the Su @-@ 35 and Tupolev Tu @-@ 22M bombers over concerns about the arrangements for Chinese production of the Su @-@ 27 . 
