I want to open a mold room, need those things to invest about how much, already have 3 cnc.

Do precision molds, if you want a good spark machine (such as Makino,) wire cutting, milling, grinding, drilling, polishing, three yuan, the design department, programming department, clamping, so many things can make a set of molds, in fact, a lot of things can be put out to do ah, the appearance of precision molds is more important. Anyway, foreign machining machine is better, but also very expensive, domestic, you can do some precision is not very high mold