penny drops, page-16

and more proof - according to Tim their lab/factory is in Guangzhou -

"1-Goverment-SIYI Have set up Manufacturing in Guangzhou"


and the location of Vincent Medical is you guessed it in the Guangzhou province --http://www.vincent-raya.com/medical/dg_map.htm

According to Tim there was a translation problem, so maybe it was simply a misunderstanding. Perhaps a better translation might have been.

.. Government-SiYI are sourcing products for JV via SBL in Guangahou province, one Vincent Medical temporary supplies of Ai Rui Te 4-in-1.

I am of the impression from the JV details that SIYI would not even have a factor at the moment. Not sure though.