China Gold Consumption for July

Here's a strange one.
Switzerland only exported 28.6 tonnes to China in July (China + HK)

Yet the SGE had huge flows in July of 301 tonnes
(This was for a five week period as they release weekly & five release dates for this month - some have four which makes for highs & lows in the numbers)

Where did they source their gold from or did they have it already in stockpiles?
Could they have another source?