Although it might look like an abandoned factory from the outside, Canton Noodle Corp is still very much in business. You push open the double doors and step inside. It feels like an old print shop, with all sorts of noodle-making machinery around and a thin layer of flour covering everything. Is anyone there? You walk in slowly, feeling like you shouldn’t be here. Maybe it really is abandoned. Maybe that flour is actually dust. But then a cheerful old lady emerges from the back and happily sells you a pack of lo mein noodles for $1.35.