SteamCoals is selling with several types based on calorific contents of the steam coal and all of transactions will using price on FOB stockpile or port only.
动力煤是几种类型的发热量动力煤，交易方式以离岸价计算，港口在印度尼西亚。
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This article gives a detailed description about the tests of burning low calorific value coals on a reciprocating-grate stoker with steam jet.