Sukhoi markets new multi-role fighter at Chinese air show ZHUHAI (China), October 31 (RIA Novosti) - Sukhoi, Russia's state-owned aircraft manufacturing holding, said Tuesday a prototype of its advanced multi-role fighter has been undergoing flight tests. Sukhoi is among more than 50 Russian companies showcasing their aircraft and aerospace technologies at the sixth China International Aviation & Aerospace Exhibition (Airshow China 2006), which opened today in Zhuhai, in southern China. "A prototype of the Su-35 has already conducted test flights, but I cannot give you more details," said Sergei Sergeyev, deputy general director of the holding and head of Sukhoi's...