The Chief may exempt from the requirements of Section 57.119.3 any appliance, device, equipment, material or system which is approved, listed, or labeled by an approved testing laboratory, provided that such appliance, device, equipment, material or system is applied, installed, operated, used, and maintained in conformance with the requirements of this article. Exemptions hereby granted do not include exemption from the fee requirements as set for in Section 57.119.8.