there was WS-6 HP TF jet,project started in 1965,abandone in late 70's,then there are J-12, started in 70's and JX copy of MIg-23 but with chin airintake abandone in favor J-8-3. a "typhoon" tank armed with 120mm and bustle auto loader abandone in favor improve T-69, a HQ-4 SAM guided by PAR ,program started in 60's project scraped in the early 80's, a PL-5 (not to be confuse with IR homing) copy sparrowAIM-7E abandone,type-356 (?) copy of APG-66 (V-1) abandone in favor of russian supplied radar.
China did attempt to developed on weapon system,but given the technology limitation,particular her industrial base simple or unable to produce high quality weapon.
Israel,during the late 60's also shamelessly copy from the french,like mirage-3 or rafael IR missile,which ford aeronautic accuse israel of copying there missile. or the merkava-1 tank, contain a lot of technology from M-60a1 and centurion,in fact, israel nickname the tank "Paturion" (PATton-cenTURION)