Minimization of all solder joint defects should be the goal for any SMT manufacturer. Through understanding the defect, its root causes, as well as how to prevent it, you can greatly improve the quality of all assemblies you manufacture. According to industry statistics, the top 10 PCB assembly defects which account for 84% of all manufacturing defects are Opens, Solder bridging, and Component shift, etc.
Open Solder Joints
Solder bridges (shorts)
Insufficient Copper-to-Edge Clearance
Missing Solder Mask Between Pads