the perfect SMT line configuration

Hi! Guys. I'm working in a SMT area and I want to have the best SMT line. What I want to know is: what would be the line configuration of a perfect SMT line?( automated solder printer-visual or automatic paste inspection-chip placement machine-IC placement machine-visual or automated inspection machine- reflow oven-visual or automated inspection-incircuit-X ray-repair station.....etc) also what kind of process controls are the required to assure 100% first time quality?. I know that this is a wide open question but let make the best SMT line all together

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