In this paper, we highlighted the importance of integrating environmental goals into the production system. We recommend the establishment of closed-loop production systems in a supply chain level. To realize closed-loop production systems, we introduced the concept of sustainable supply chain networks. With a SSCN, it is possible to shift successfully from a flow economy to a circular economy by combining environmental and economic issues, thereby improving eco-efficiency.
Standard passport processing generally takes between four to six weeks, but it can take longer during peak travel times.
A passport express in Canada can take quite a while depending on certain conditions. If the request is done in person at a Passport office, it can take 10 business days. If it is done by mail or through a receiving agent, it can take up to 20 business days.ow long will a first passport take?   http://travel.state.gov/passport/get/processing/processing_1740.html     ROUTINE SERVICE     As of (Friday January 9, 2009), we are processing routine a â¦ pplications in approximately 3 weeks from the time of application.