China has already exported quite a number of weapons to Middle east.Problem is China is unable to break into Saudi Arabia market or Middle Eastern markets influenced by West / US, only Pakistan closest ally and identical muslim nation to Arabs can do that for china.
en.wikipedia.org/wiki/PLZ-45
en.wikipedia.org/wiki/Chengdu_Pterodactyl_I
www.newsweek.com/exclusive-cia-helped-saudis-secret-chinese-missile-deal-227283
But China is still consider a new player becos only recently then our weapons have catched up with the best of western. Like UAV, surveilance system, Air defense and range of armours. In another coming decades, more products will be offered.