４０２超声雾化器主要适用于各种急慢性呼吸道疾病的预防和治疗。以往我们对这类设备的维修有９５ %以上的工作是在做更换晶片和振荡管这两部件 ,且常因固定这两部件的螺钉生锈难以取下而犯愁 ,有时甚至因为取不下晶片而被迫更换价格较晶片贵十几倍的水槽为代价来修复设备。后 402 ultrasonic nebulizer is mainly applied to the prevention and treatment of various acute and chronic respiratory diseases. In the past, more than 95% of our work on the maintenance of this kind of equipment was to replace the wafer and the oscillating tube, and it was often confusing to fix the rust of the screws fixing these two parts. Sometimes it was even impossible to remove the wafer. The equipment was repaired at the expense of a tank that was ten times more expensive than the chip. Rear