OEM Heat Exchangers For Industrial Applications OEM heat exchangers for industrial applications are built to a buyer's brand or specification and integrated into larger systems across chemical, HVAC, food, environmental and energy sectors. Center Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd) provides made-to-drawing pressure-equipment manufacturing with material flexibility and a documented quality system suited to industrial OEM programs. What Are OEM Heat Exchangers