Coal-fueled boilers with a usage rate of 95 percent in Beijing are expected to be replaced by boilers fueled by natural gas and coal gas manufactured by the Chongqing General Boiler Factory (CGBF)....
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Coal-fueled boilers with a usage rate of 95 percent in Beijing are expected to be replaced by boilers fueled by natural gas and coal gas manufactured by the Chongqing General Boiler Factory (CGBF)....