Cornerstone Direct partners with reputable labs overseas. In our partnerships, we provide an American technician to periodically go to our facility, and train our team according to our Cornerstone and PTC standards and as well as reaffirm the importance in providing quality control to every case in our production lines. Our production lines have over 150 full time, fully trained technicians. No one on our production lines are a technician in training. Our production is equipped with brand new 3shape Cad Cam design departments for zirconia restorations. Our facilities house over 900 fully trained technicians, so growing our production line is not an issue. At our facilities continuing education and training is a must. That is one of the main reasons why we are able to offer a guarantee on all of our restorations.