Seattle-based EquaShip plans to re-launch itself in early 2013 as the nation’s “fourth parcel carrier,” with a focus on small and medium-sized online sellers, touting shipper services that will cost between 10 percent and 50 percent less than UPS and FedEx. EquaShip announced a temporarily suspension of operations in February, after an initial launch last October. At the time the company said it needed to re-engineer its transportation network, citing customer demand for...