Table 4.

Computational results for different values of vector ɛ

Number	Objective function values		Active facilities number			Total established facilities number	Environmental protection costs
	Economic objective function (million Rials)	Environmental objective function (million pt)	Recycling centers	Reliable distributors	Unreliable distributors
1	8,362,140,000	5023.36	4	4	4	12	8,333,874,332
2	2,501,892,000	5072.77	4	4	4	12	2,473,626,332
3	1,260,498,000	5122.18	4	4	4	12	1,232,232,332
4	542,499,000	5171.59	4	4	4	12	514,233,332
5	147,700,200	5221	4	4	4	12	119,434,532
6	28,271,049	5270.41	3	3	3	9	5381
7	28,266,507	5319.82	3	3	3	9	839
8	28,265,668	5369.23	3	3	3	9	0