Depends on the type they purchase.

*All actually designed in the PRC to the Iranian requirements. Then the Chinese organise production in Iran, too, but some of critical…

Depends on the type they purchase. If it' some of 'Iranian'* latest... and then the armed ones... that's not going to be pleasant.

*All actually designed in the PRC to the Iranian requirements. Then the Chinese organise production in Iran, too, but some of critical components are still made in the PRC.