Some 220 domestic and 20 foreign firms have participated in the event, IRNA news agency reported.
The exhibition aims at showcasing the latest achievements in different fields such as spare parts, engine oils and lubricants, after sale services, bodywork repair and painting, repair and maintenance service providers, and specialized media.
The event goes on from July 16 to 20 in Mashhad Permanent International Fairgrounds.
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MNA