Due to the increase in the quality of manufactured materials for construction and achieving principle of customer orientation, this company has set up Quality Control Unit in its owned collection. By qualitative control unit with qualified staff (with qualification certificate from Yazd General Standard Organization) and special laboratory for bitumen, asphalt, and aggregate we can do all relevant tests. These tests are performed in accordance with technical specifications to ensure the quality of manufactured materials. Furthermore, the reports of results based on laboratory sheets are recorded and archived.