@ScotNZ,
Welcome to China. Well, actually know ALOT about finding work in the ME field n China. I have good news and bad news.
I myself an a degreed ME from the USA. I was working in a senior capacity in the USA going back and forth to China and back. Over time, met a girl and fell in love. We decided to move to China for good. We got married and I have been living in China ever since.
First Arrival
When I first arrived, I had a great deal of difficultly in finding work in my field. All the ME positions required full language fluency, AND be a degreed ME. I did not have that. Heck, I still can only speak Chinese with a terrible accent. To get work, I did what all expats do. I went for the "low hanging fruit". I went and got a teaching job first.
Getting Equipped
Since I had a degree, and was from one of the five preferred nations (USA, Canada, Australa/NZ, UK), all I needed was a ESL diploma. I got mine online through a USA college. It was 50 hours of class and cost me around $300 USD. Then, to get experience, I tutored some people in the USA for a while. That gave me the experience.
Finding Work
I had no problem getting work as a teacher. Eventually, I became the "Director of Teachers" at our branch office. I liked teaching, and still do. But, it's not for everyone. It is hard work. To meet my salary expectations I had to take on full-on 12 hour days on the weekends, and aggressively market my skills as a teacher. I did fine.
Engineering
The entire time that I was teaching, as much as I liked it, I felt that I was not utilizing my full abilities. Other teachers came and went. They were often much younger than me (in their 20's) and ended up making the same salary that I was making more or less. Though, I was making more with all my client load. They would come teach, and then leave China for an adventure in another nation. I felt that I could be making more if I were working in my field.
I was wrong. English teachers, in China, can make from 10K RMB/month to 25 RMB/month depending on the city and the work load. If you work in a 2nd or third tier city you can have a great and fantastic standard of living, though your salary is only 10K/month. It depends where you live.
Engineers in China make from 5K/month to 20K/month depending on the skills and situation. So if I were to leave my teaching position and compete against Chinese engineers I would be a speaking disadvantage, and I would make much less money.
What I wanted was to be employed as an expat-engineer or expat-manager. Here, a foreign engineer is hired for their experience and knowledge over a native Chinese engineer. As a result they are paid much more. Salaries vary from 30K/month to 70K/month with bonus systems put in place. The problem is that I had been out teaching for a while and could not easily go back into my field.
What I ended up doing was take on QC and Marketing work (in addition to teaching) for my wife's family businesses. I did what every I could do. I helped design piping for ships, I helped make brochures. I troubleshooted electronics, and even physically checked stocks for quality. I did everything that I could. SO while I was doing all of this, and teaching, I was still looking for work.
Eventually, I found work through friends of friends. I found work through old colleagues who hired me, and now I am working as the GM of a company. It was a hard and long slog. I am not going to sugar coat it. You need to work, but it is possible. Just don't give up and be ready to do whatever it takes.
Summary
I want you to achieve your dream. I think that if you want to come to China and build up a life, it is indeed possible. But you will need to start teaching to get an income stream flowing. Then while you have money going in, look for work.
I would consider you for an engineering position, if one opens up in Zhuhai. Please contact me privately via email and I can give you details. Please, Don't get your hopes up too high. I have no openings at this moment.