Do you offer trainings? February 06, 2019 09:53 We will offer various training courses in our Gyeon Training Center Europe once launched in 2019. Related articles How to become a Gyeon Certified Detailer? Is the probationary period obligatory? What is the shelf life of your products? Where is your training center located? Can I use Certified Detailer coatings on the probationary period?