How much is secondary sector in Beijing worth?
what has been the yearly increase in the number of cars?
what ranking is beijing in terms of pollution in the world?
How far over the limit are Pm10s in the atmosphere?
3 to 4 times
how much does coal account for in terms of total energy used?
How much do industrial sources account for in terms of all SO2 emissions?
boilers over what capacity must have scrubbers in them?
What fuel is being introduced as an alternative to coal?
what happened to polluting industries during the olympics
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