海尔空调推出“无尘安装”，正好笔者邻居买了一台海尔空调，于是过去看了一回热闹，笔者发现，安装人员带的电钻上安装了一个十几厘米长、碗口粗的防尘罩盖，防尘罩盖紧紧贴在墙壁上，任电钻突突振，却看不到一点飞扬的尘土，待墙壁钻透，将电钻抽出，仍然没有尘土撒漏。过去 Haier air conditioner introduced “dust-free installation,” just bought a neighbor I Haier air-conditioning, so in the past read a hurdle, I found that the installer with a drill installed on a dozen centimeters long, coarse mouth dust Cover, dust cover tightly attached to the wall, any power drill sudden vibration, but do not see a little dust flying until the wall through the drill, the drill out, still no dust spill. past