Regular inspection for quality control assures the best product in market. Do you agree?

If your product is already competative in the market - then , apply quality control measures THEN make necessary corrections  THEN I agree with you.

Continuous quality improvement.

Just quality inspection doesn't necessarily assure best quality over long periods of time; but  being adaptive to modern & contemporary demands boosts the chances even further.

I see that building quality checks into the production process is the most cost effective approach to quality.