(1) During the continuance of the licence, all plant, machinery, equipment, meters, instruments, vehicles and materials imported by the Company for the purpose of the Company's business of generating, transmitting, distributing or supplying electricity are exempt from all customs, and other import duties, landing tax and trade tax; but such exemption does not apply to any plant, machinery, equipment, meters, instruments, vehicles or materials imported by the Company for resale or hire or for the private use of any of the Company's employees.