China tends to buy light crude instead of light sweet crude, hence the oil and derived fuels have more sulfur than is typical for European or American vehicles, industry, etc.
This is something of a problem when a country with as many people as China and an economy as growth-oriented as China's is, uh, firing on all cylinders.
This is something of a problem when a country with as many people as China and an economy as growth-oriented as China's is, uh, firing on all cylinders.