Sorry, but if a camera doesn't pass a QC test during production, it is sent to rework, repaired, and sold as a new camera (which it is). This is the case with Cameras, TV sets, automobiles, airplanes, satellites, ... virtually everything.
Also, Canon refurbs aren't necessarily returns of defective or demo units; they can be units that failed some QC check during the actual manufacturing process, and were deemed feasible to adjust to factory specifications (i.e., you could very well have a brand new camera that just took a minor adjustment to make it through the process of being built).
Even food is reworked and sold as new and is only sometimes marked as reprocessed.
Canon has a refurb facility in the USA which does testing and repacking. You should get a camera in very nice condition, but the battery will be used, and the manuals likely also used. I've bought a few and they were excellent cameras and never had a problem, but they were not new.
5D MK III, 16-35/2.8 L II, 24-70/2.8 VC, 24-105/4 L IS, 70-200/2.8 L IS II, 100/2.8 L IS, 40/2.8, 50/1.4, 85/1.8, 150-500 OS, 600EX-RTx2, ST-E3-RT, Rokinon 24/3.5 T-S, D7100+18-300 VR, YN568EX, 055CXPRO4+468MGRC2, 190CXPRO4+322RC2, Gorillapod Focus+496RC2, CamRanger, B+W filters, Konova K3/31.5 etc