The phrase "excellent quality" means something that is really good and made really well. It describes something that is of high standards and is considered to be very good. Full definition
The city has been ranked by various national media as one of the best places to live with excellent quality of life and high worker productivity. (localresumeservices.com)
As with humans, prevention, early recognition, and management of health concerns are the best ways to provide pets with excellent quality of life. (todaysveterinarynurse.com)
Thank you both for continuing to meet our expectations for excellent quality work! (colorhousegraphics.com)