One of the most massive advantages shenzhen china has is that everything you need to make a product prototype exists in a 30 min radius. There are malls of just stores with industrial parts. you go there and find a dozen options. Then you head back next door and there are thousands of places with high speed 3D printing. Next to that is custom circuit fabrication. Over in the offices at the end of the block are all the molding designers, graphics designers, CAD operators, etc.

man, they’re really living in the future over there. just casually heading over to the 3D printing mall to get some prototypes made