Abstracts - One of the requirements of competitiveness is the ability of the organizations to adjust
themselves with the customer needs quickly. Increasingly competitions make the organizations have
more contacts and have relationships with the customers in the world of markets.CRM is a commercial
process in the B2B environment, which prepares the organizational structure to improve and survive in
trading. CRM is a strategic process of support, against the competitors, providing value for the buyers
and sellers, and gaining excellent benefits. This research was done in Truck making company of Tabriz in
the form of case- study, and its purpose was to investigate the impact of customer relationship
management in order to gain the competitive advantage in industrialized manufactures of Truck. It was
done through designing four hypotheses: improving and specializing the relationships with the customers,
understanding and separation of the customers, responding to the customers' complaints, and attracting
and protecting the customers.The method of conducting the research is descriptive and for gathering
data we used questionnaire. The results obtained from the data analysis show that all the relations are
meaningful at the %5 of deviation using spearman correlation test from the managers' perspectives and
the variable of understanding and separation of customers has the most impact, and the variable of
attracting and protecting of customers has the least impact on the dependent variable. Also, using
freedman test, the ideal position of variables in the given company from the managers' perspectives is as
follows:1) Meeting customer's complaints2) Attracting and protecting customers being faithful3) Improving
and specializing the relations with the customers4)understanding and separating of the customers.