The following quote comes courtesy of Wikipedia:
“ISO 9001 is not in any way an indication that products produced using its certified systems are any good. A company can intend to produce a poor quality product and providing it does so consistently and with the proper documentation can put an ISO 9001 stamp on it. According to Seddon, ISO 9001 promotes specification, control, and procedures rather than understanding and improvement. Wade argues that ISO 9000 is effective as a guideline, but that promoting it as a standard “helps to mislead companies into thinking that certification means better quality, ... [undermining] the need for an organization to set its own quality standards.”  Paraphrased, Wade’s argument is that reliance on the specifications of ISO 9001 does not guarantee a successful quality system.”
We make the assumption that the ISO9001 stamp quarantees us high quality. China has over 250000 ISO factories and ranks #1 in the world with that accreditation. The U.S. ranks #10.