A Grey-Fuzzy Multiobjective Model for Supplier Selection and Production-Distribution Planning Considering Consumer Safety

Table 4

Price of OR materials ($/unit).

Suppliers/; Periods	OR Material
	O11			O12
	P1	P2	P3	P1	P2	P3
Supplier 1	[0.50,0.65]	[0.55,0.65]	[0.65,0.75]	[0.70,0.75]	[0.75,0.85]	[0.80,0.85]
Supplier 2	[0.55,0.60]	[0.65,0.75]	[0.60,0.65]	[0.75,0.80]	[0.75,0.85]	[0.85,0.90]
Supplier 3	[0.65,0.70]	[0.60,0.65]	[0.65,0.75]	[0.75,0.80]	[0.80,0.85]	[0.85,0.90]
Supplier 4	[0.65,0.70]	[0.65,0.75]	[0.70,0.75]	[0.78,0.85]	[0.83,0.85]	[0.88,0.90]
Suppliers/; Periods	OR Material
	O21			O22
	P1	P2	P3	P1	P2	P3
Supplier 5	[0.73,0.75]	[0.75,0.80]	[0.75,0.85]	[0.25,0.34]	[0.28,0.35]	[0.30,0.40]
Supplier 6	[0.75,0.80]	[0.78,0.80]	[0.75,0.85]	[0.29,0.29]	[0.30,0.30]	[0.32,0.40]
Supplier 7	[0.75,0.75]	[0.79,0.80]	[0.85,0.85]	[0.29,0.34]	[0.30,0.35]	[0.35,0.40]
Supplier 8	[0.80,0.85]	[0.83,0.87]	[0.87,0.90]	[0.30,0.35]	[0.35,0.40]	[0.38,0.42]