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Nov 16, 2018 & 0183;& 32;2.1. Coal Production in China, Australia, and the USA. Nowadays, China occupies a principal position in the worlds coal productioncoal production reached 1747.2 Mt Million tonnes oil equivalent in 2017 , which was 4.7 times the coal production in Australia, and 5.8 times that of the USA Figure 1 . It suggests a higher possibility of

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production material KP90 medical mask in Australia