Playing cards manufacture requires a lot of skill input at every stage of production. The playing card manufacturer is to be very skilled in doing that so that your decks are appreciated everywhere it travels.
The right playing cards manufacturer could be the one who gives in your hand the required product with minimum defects. To claim zero defects can never be a term in printing industry. Even if you say that you were happy with the product you received, there will definitely be ONE more person to take out defects in that product. This is out of experience that we speak as a playing card manufacturer.