Kar Technical Institute: It is called a set of software management in the width of the site and application and various ways of communication with the customer.

Specialists: People with specialized skills and professions in various fields who are related to the technical application of work on the one hand and with subscribers on the other hand, and the work of subscribers is referred to them.

Subscribers: refers to the group of regular customers who received a subscription card from the technical application of Kar and receive technical and non-technical services. Services are provided in the cities of Tehran and Parand.