Something i would like to mention here: the arms trade with norinco, was never just a following a simple rule of supply&demand, but mostly effected by international political enviorment and chinese domestic policies.
The big enviornment out there, were not just effected by those UN gun ban thugs, our super powered neighbour down to the south also played a big part of it.
Ever payed attention on the video footage of recent mass explosion in Tianjin? Well, some people says that kind of explosion can not be just some of flameble materials, but ruther like high explosive munation or warheads. Tianjin port is the known staring point for most of the norinco shipments. So, go figer