1.enviromental protection 2.energy saving evaporative air cooler 3.esay ... sound type nylon fan blade, big air output,low-energy consumption,low noise.3. Injection-moulded cabinet, pp ... sizing are critical to the proper operation of your cooler.Why you choose the XINGKE evaporative air cooler ... comparable swamp cooler.That translates to savings on your energy bill,but also in the environment.6.can ...