China is a bigger concern for crude oil and products markets than the current worries about the British vote to leave the European Union.
While the news media continues its relentless focus on Brexit, there is mounting evidence of a shift in the dynamics of China's crude and fuel markets, which may have a far greater impact on global energy markets.
On the surface crude imports by the world's No.2 consumer China look healthy enough, rising 16.5 percent to the equivalent of about 7.49 million barrels per day (bpd) in the first five months of the year compared to the same period last year.
But there are several factors at work that make the strength in imports appear misleading.
Firstly, domestic crude production is falling, with official figures showing output dropped by 7.3 percent in May from a year earlier, taking the decline for the first five months of the year to 3.7 percent.
China produced 85 million tonnes of oil in the January-May period, equivalent to about 4.08 million bpd, representing a drop of about 170,000 bpd from the same period in 2015.
This means that at least 170,000 bpd of the nearly 1 million bpd in additional crude imports in the first five months of this year has merely been to replace lost domestic output.
The second factor at work is that China appears to be continuing to fill strategic storages at a fairly rapid pace.
Given that the authorities don't reveal inventories, the best way to gain an idea of how much crude is going into stockpiles is to subtract refinery throughput from total crude available from both imports and domestic output.
In the first five months of the year imports and domestic production were a combined 240.9 million tonnes, while refinery throughput was 227.3 million tonnes.
This means that 19.6 million tonnes, or about 941,000 bpd went into either commercial or strategic storage.
This is sharply up from the figures for 2015, which showed a difference between crude imports and domestic output and refinery throughput of about 560,000 bpd.
The third factor at work is rising exports of refined products, particularly gasoline and middle distillates such as diesel and kerosene.
In the first five months of the year, diesel exports have surged 322 percent to the equivalent of about 271,000 bpd, jet kerosene by 8 percent to about 245,000 bpd and gasoline by 63.5 percent to about 187,000 bpd.
China's Changing Role
Take the three factors together and it becomes clear that China's strong gain in crude oil imports isn't a reflection of higher demand, in fact it's likely that actual growth in consumption of oil products in China is non-existent.
This view is further supported by looking at the breakdown of refinery throughput, which shows output of diesel dropped by 2.2 percent in the first five months of the year.
Given the drop in production of diesel and the massive surge in exports, this suggests that much of the Chinese economy is struggling, given the fuel's main use is in transport of goods and construction.
However, Chinese refineries produced 9 percent more gasoline in the first five months of the year, which does offer support to the view that the nature of the Chinese economy is shifting toward a more consumer-led economy.
Refiners have been maximising gasoline output to meet demand as more cars hit Chinese roads, a sign of increasing spending power by consumers.
Overall, it's still possible that China's crude imports will remain robust, especially if the unknown factor of flows into strategic storages stays supportive.
But it's becoming increasingly clear that China is playing a far greater role in fuel export markets in Asia, the world's biggest oil consuming region, in a trend likely to continue.
(Editing by Himani Sarkar)