QSN designed and implemented a complete quality system for my medical device business. Their service was professional and efficient, both from a cost and time perspective. While I had always suspected that QSN had provided me with a first rate quality system, the proof came when the FDA announced a complete audit of my business on very short notice. QSN gave me full support for the audit itself on a very tight time schedule and my business passed the audit with no observations. I could not be happier with their service and wholeheartedly recommend them.