Green Supply Chain Network Design with Economies of Scale and Environmental Concerns

Table 3

Distance from suppliers to plants by different transport modes (km).

Supplies	Plants
	P1	P2	P3
S1	780/890/690	790/850/700	820/880/680
S2	720/850/600	720/790/650	710/770/630
S3	920/900/810	920/980/820	980/1050/830
S4	700/850/620	710/760/630	720/850/610
S5	790/900/630	850/940/650	770/850/610

Note: the three values of each cell of distance in Table 3 represent the three different distance values by road, train, and air transportation, respectively (e.g., 780/890/690 means that the distance from S1 to P1 by road, train, and air transportation transport modes is 780, 890, and 690 km, resp.).