We are a husband and wife team - I am from London, UK and my wife is from Guangdong, China.
This way, we can have very strong communications and a clear understanding of the requirements.
We would gladly send you a sample of the quality of her Chinese voiceover talent - she has worked as a professional Chinese teacher and brand representative in the past.
Looking forward to working with you and good luck with your project!
Best wishes,
Mark & Zhuzi