This does not include the fact that you have a mold, if there is no mold, mold costs about more than 20,000 (this is a simple mold), if the complexity of the mold costs will be more expensive, so it is recommended to look for a special mold factory to do, it is best to have a public mold of that kind, you can save a lot of time and money in the mold above, this is also a personal recommendation,
If your product more Special, you can make custom molds, this is more convenient, their own molds when you want to use can be, if you find a larger factory to do this order, I guess the other side is not willing to take, you can find a medium factory, such as: Goodwill Plastic Products Factory, from the production of molds to the injection molding, can be completed.
Additionally, the plastic shell of the electric car controller to do this is quite a lot, just look for can, I hope I said can be useful to you. Thank you.