. . . equipment is certified to perform as represented by independent testing laboratories. The actual certification reports for each piece of equipment can be viewed below. In addition, VMI has a listing of Certified Technicians to assist in installation, maintenance or repair of our products. The listing is by state and city and is available below. VMI encourages installers and technicians to obtain their individual certifications by utilizing our training materials for operator testing and certification and for equipment installation and field testing services.