This is to certify that Mayeryn has performed the project Fence Configurator (using VR technology) for our company. System is used to visualize 3D fences models in the real photos of area. The project consisted in designing (the concept, architecture, UX and graphic design), implementation, testing, and deploying (first to the test environment and then to the production environment) and then conducing trainings. System is up to WCAG 2.1 AA. The whole development process went smoothly and according to our requirements. All throughout our cooperation we were kept informed and no communication-related problems were encountered. The order has been properly completed. Any technical problems reported by us were instantly fixed and dealt with by the company's employees. Due to their expertise and high performance the project met the deadline. Mayeryn was very flexible when developing the system. Our cooperation with Mayeryn was not only fruitful but also satisfactory. We would highly recommend cooperation with Mayeryn - Mayeryn is reliable contractor.