For the change filter system of the flat film stretching line, we apply advanced automatic belt change filter.

为改变过滤系统的延伸线平片，我们运用先进的自动带改变过滤器。

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Change the filter cartridge as often as instructed by the manufacturer.

要按制造商要求的频率更换过滤套筒。

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You should change this filter every 3 to 6 months -- more often if you have pets or live with a smoker, or if you or a loved one has allergies.

CNN: Your own clean-air act

While your oil is changed, the sales associates will offer to change your air filter, perform a transmission fluid change and do a variety of other more profitable services in the hopes of increasing the profit margin.

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Services like an air filter change are easy to do yourself.

FORBES: 5 Most Overpriced Car Repairs