Sounds like a lose-lose. If you give your blueprints and essentially your IP to a Chinese firm, what is to prevent them from delivering an inferior product and materials under your contract, opening up another company manufacturing an AIO with relatively superior materials selling them under a different name and keeping all the profit to themselves.
I'm saying this because I've seen this happen before with an automatic door lock manufacturer that i used to sell(early 2000's before the current market saturation).
Not saying I don't buy things made in China. I have and will , hat is the world we live in.
I'm hoping you guys will break this cycle of given away your mind and life's work to the Chinese, in hopes of making ever larger profits that will not materialize once you've been double crossed.
We don't give away our IP. China makes these inverters themselves now. We guide certain manufacturers is all.
We still design and make our own products strictly in the US. With the help of parts that come from all over the world. Custom and off the shelf.