Material purchase expenses  restricted to 50 Per Cent. in the light of Central Board of Direct Taxes Circular dated March 30, 1993 ([1993 201 ITR (St.) 4) and other expenses such as,   power and fuel expenses, salary expenses, travelling expenses, convenience expenses, telephone expenses, miscellaneous expenses, tea and refreshment expenses and accounts fees expenses  directed to be allowed (AY.  2016-17)