Thanks, not sure if its just hearsay though.
I found it on a UK site:
http://www.iii.co.uk/investment/detail?code=cotn:LSE:CZA&display=discussion
and google (twitter)
https://www.google.com.au/#tbs=qdr:w&q=Hengshun CZA twitter
Title of Hengshun announcement (not sure if this means trading halt):
恒顺众?:关于筹划重大事项停牌的公告
Announcement:
https://translate.google.com.au/tra...nalpage/2016-05-18/1202325855.PDF&prev=search