Seyyedeh Najmeh Hosseini - Young Researchers and Elite Club, Torbat-e-heydarieh Branch, Islamic Azad University, Torbat-e-heydarieh, Iran
Somaye Izadi - Young Researchers and Elite Club, Torbat-e-heydarieh Branch, Islamic Azad University, Torbat-e-heydarieh, Iran
Akram Jafari - Young Researchers and Elite Club, Torbat-e-heydarieh Branch, Islamic Azad University, Torbat-e-heydarieh, Iran

We were trying to investigate and study balance on Models of DEA (CRS_VRS) in this research. We provided a model to estimate the efficiency of the coating formulation applied to equilibrium radius with Applying equation (PT, QT) in both input and output-oriented. Furthermore, we investigated balance in making weight restrictions, which tested relationship between input and output factors and corresponding relations between the weights. Moreover, we showed that entering balance (PT, QT) in the model is equivalent with entering constrains of UTQT_VTPT≤ 0 in multiple model. Then, A brief of measuring units of balance, which included: Evaluate efficiency of radial, identify efficient objective for non-efficient DNV and identifying suitable reference. Following, we defined TVRS_TO and TCRS_TO and finally, we confirmed and concluded about characteristics of thermos and conditions of efficient pareto in technology

Data Envelopment Analysis, Trade-off- weight restrictions, TVRS,