Fourth? Sweden, the UK, Italy, France, Russia, the US, Japan...
Strike Italy and the UK from that list of yours. Neither country has much in the way of an aerospace industry -- or, put it this way, if you include them, then you also have to include Spain, Israel and Germany.
It also reflects China's attempts to develop homegrown technology and intellectual property to avoid paying licensing fees to foreign companies.
"developing homegrown tech" in much the same way a burgler breaks into a home to avoid paying DVD player purchase fees
"China "has become the world's fourth country that is capable of developing on its own advanced fighter planes, engines and missiles,"
"Fourth? Sweden, the UK, Italy, France, Russia, the US, Japan..."
Consider the ignorant retards that wrote this crap:
"Teheran Times"