Given the connections, I think Huayou and/or CATL are two most likely candidates.
Huayou paid their 186m shares at 7c plus recent 26m at 3.8c, with average price of 6.6c
Quite a few takeover by Chinese, share price actually was pushed down then made a bid, i.e NKP @3c, then made a cash offer at 8c, NZC pushed down to 15c, made an cash offer 37c.
All IMO.
AVZ Price at posting:
3.9¢ Sentiment: Buy Disclosure: Held