China's Su-35, J-20 to maintain airspace safety
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On Friday, the air force also announced that China's latest J-20 stealth fighters have been commissioned into air force combat service.
The J-20 signals that China's air force has greatly increased its ability to deal with new security threats in airspace, and made steady progress in the aero equipment system, Wang said.
The stealth jets will enable the air force to improve ability to tackle conventional threat and enhance real combat capacity, he added.