This is a handy location for picking up all the usual electronic items and accessories; home appliances computers, phones and tools as well as some fun stuff like folding bikes, radio-controlled helicopters and even more random, non-electronic paraphernalia.
Watch out for fake mobile phones and computer products, though they're usually pretty upfront about what's what. There's plenty of second hand bargains (if you've got a conscience you might want to stay away from the "used"mobile phones) and they'll take your old laptop, printer, phone etc off your hands for a few RMB. If your goods are not quite ready to give up the ghost just yet, they're also pretty efficient with a screwdriver and a soldering iron.
Click the link to see the Shanghai Markets Map location.