global Metal Heat Exchangers production revenue market scale was from 7900.82 million US dollars to $ 10734.28 million. It is estimated to reach 15147.91 million dollars by 2021 from 11390.57 million dollars in 2016, with the CAGR of 5.86% in terms of revenue over the period 2016-2021. http://www.qyresearchglobal.com/goods-1108414.html