Excellent high-level service! I am greatly impressed by the way they understood our operational requirements and needs. The professionalism and intelligence of the staff is remarkable. I am deeply indebted to them for their quick and reliable work. As a client, all my requests and demands were met with surprising patience and concern.I wholeheartedly appreciate their work and services. Their honest service has led to a good working relationship between both organizations.For anyone going for ISO certification, I would highly recommend GQS.