... area.3.mechanical tube expanding,tight connection between fins and copper pipe to increase heat exchange efficiency.4.bright ... ,reasonable design, Power conservation by 25%.7.cold-rolled steel plate for shell,phosphating static spraying technique,pleasing shape,rustproof ... ,medium,low temprature evaporator evaporator: air cooler series is suitable for high,middle,low temprature(+5°C— -25°C)1 ...