Hello Thomas
you can find all the details in the attached picture.
For us, foreigners, the English details are:
SIAV 2019 - SHANGHAI from 12 to 14 APRIL 2019 divided in two sections:
The 27th Shanghai International High-End Hi-Fi EXPO
and
The 4th Shanghai Portable Hi-Fi EXPO
at these locations:
JIN JIANG HOTEL
No. 59 Maoming South Road, Huangpu, Shanghai - China
Tel. +86 21 3218 9888 - shjinjianghotel.com
JIN JIANG TOWER
No. 161 Changle Road, Huangpu, Shanghai - China
I also just remember that, alternatively, a valued HK Member of WBF mentioned to me about an audiophile exhibition in Hong Kong (closer to Guangzhou - Guangdong) sometimes August 2019 (will find all details for you later on)...
Let's keep in touch for any audiophile rendez-vous while around
Kind regards,
Riccardo