I contacted WGC Shop about the China-made Thompson and it seems that the one they are selling, isn't CYMA. Here's a copy of their reply:
Dear **** *******,
Thank you for your inquiry,
Please be inform that this is not made by CYMA but our supplier
didn't disclose the mfg of this aeg,sorry.
Thanks,
--
Best Regards
Allen Wong
WGC ( Hong Kong )
http://www.wgcshop.com
Contact : http://www.wgcshop.com/contactus.htm