1) security of the push-pull self-latching system; 2) multicore types with 2 to 32 pins; high-density installation for space-saving; 3) soldering, crimping and pcb contacts 4) straight or elbow (90 degree) 5) multiple key options to avoid mismating between similar connectors; 6) 360-degree screening for full emc protection 7)keying system(g is standard key) for connector alignment. Custom