Where is your training center located? June 16, 2020 09:40 Updated It is located in Cologne - Germany. Find all information right here: https://gyeonquartz.com/gec/ Related articles What trainings do you offer? What languages do you train in? I’m an enthusiast - will you train me to become a professional detailer? How to become a Gyeon Certified Detailer? What is a Quartz coating ?