由于贺德克
滤芯在长期使用中，或者安装、搬运的过程中难免会有所损坏，所以要及时做好保护措施，防止磕碰现象的产生。特别是在使用了一段时间后，滤芯内部难免会挤压许多灰尘或者杂质物，这都是保养需要做的长期任务。
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