Table 3.

Technical parameters

$d_c$	The demand of customer c,
$M$	Maximum supplier extraction capacity,
$M_f$	Maximum factory production capacity,
$M_i$	Maximum CDC collection/distribution capacity,
$M_b$	Maximum RLC recycling/landfilling capacity,
$M{r}_f$	Maximum factory remanufacturing and refurbishing capacity,
$M{N}_{\text{dismantled}}$	Minimum percentage of the returned product to be remanufactured (unit),
$M{N}_{\text{disposed}}$	Minimum percentage of the returned product to be recycled and landfilled (unit),
${\gamma }_{\mathit{sf}}^{\mathit{ts}}$	Shipping rate from the supplier s to factory f with shipping alternative ts,
${\gamma }_{\mathit{fi}}^{\mathit{tf}}$	Shipping rate from factory f to CDC i with shipping alternative tf,
${\gamma }_{\mathit{if}}^{\mathit{ti}}$	Shipping rate from CDC i to factory f with shipping alternative ti,
${\gamma }_{\mathit{ic}}^{\mathit{ti}}$	Shipping rate from CDC i to customer c with shipping alternative ti,
${\gamma }_{\mathit{ci}}^{\mathit{tc}}$	Shipping rate from customer c to CDC i with shipping alternative tc,
${\gamma }_{\mathit{ib}}^{\mathit{ti}}$	Shipping rate from CDC i to RLC b with shipping alternative ti,
${\gamma }_{\mathit{bs}}^{\mathit{tb}}$	Shipping rate from RLC b to supplier s with shipping alternative tb,
${\delta }_{\mathit{sf}}$	Distance between supplier s and factory f,
${\delta }_{\mathit{fi}}$	Distance between factory f and CDC i,
${\delta }_{\mathit{if}}$	Distance between CDC i and factory f,
${\delta }_{\mathit{ic}}$	Distance between CDC i and customer c,
${\delta }_{\mathit{ci}}$	Distance between customer c and CDC i,
${\delta }_{\mathit{ib}}$	Distance between CDC i and RLC b,
${\delta }_{\mathit{bs}}$	Distance between RLC b and supplier s,