I would never claim that nothing escapes me but I never heard that before. I thought Iraq was a protégé of Russia, not China. Iran buys missle motors from North Korea. Is that the China connection you were talking about?
Iraq / Iran have a need for military and technical equipment. China has a need for hard currency. China's strategic interest is bogging down the American foreign policy and military in a conflict with Arab states to distract it from addressing a Chinese threat. That threat is their development of a nuclear offensive capability, a blue water navy, and their expansionist plans in the Spratly Islands, Taiwan, and the waters off Japan.
I can't speak to specific technology transfers, but you should not be surprised if one surfaces.