The paper expounds the superiority of DYJ serried oil oil-heaters compared with the steam boiler and plus forward the way use it on chemical reaction caldron and plastic extruding machine.

• 本文主要叙述了DYJ系列油加热器与蒸汽加热方式相比的一些优越性；以及怎样用在化工行业的反应釜和塑料压延设备上.