◆采用独特的推开百叶机构装置能自动打开和关闭百叶窗叶片；

◆采用不锈钢扇叶片一次冲压成型工艺，不变形、不断裂、美观耐用，高精度动平衡检测校正，保证风机运转平稳无振动，降低噪音，有效提高使用寿命；

◆采用特有的凹进式风机搬运提手设计，不但有效避免装卸、搬运过程中的不便，还不会影响风机安装和外观效果；

◆V型皮带轮由高强度的铝合金材料热压铸成型，材质轻、强度高；

◆配置高效节能电机，通过3C认证，防护等级：IP55，绝缘等级F级；

◆机械离心式打开机构采用韧性高的增强尼龙100%原料注塑加工，强度高、寿命长；

◆导向杆内嵌的钢件安装在法兰片上，增强了机构的可靠性，有效避免尼龙生产过程的伸缩变动。

◆Patented designed centrifugal system which can open and close automaticlly,ensuring the shutter opens 90degree under all the condition.And uncontrol-lable air can prevent from going into the birdhouse when the shutter works;

◆Mirror designed and injection moulding Stainless steel balde,with big air volume never distortion and broken;

◆Experiment of homeostasis make the blade work smoothly,nearly no noise and steadily output of air;

◆Centrifugal shutter system made of high quality engineering nylon,high strength and long service life;

◆High efficient and energy-saving motor with ccc certificate,protection class:IP55,insulation class:Fgrade.