It is the pre filter for high and medium effect filter.

该过滤器作为高效过滤器和中效过滤器的前置过滤器。

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Company's main products are the early effect filter, in effect filter, high efficiency filters and activated carbon air filter.

公司主要产品有初效过滤器、中效过滤器、高效过滤器，以及活性碳空气过滤器。

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Filtration system: Early effect filter, advanced cotton, glass cotton platform filter, activated carbon filter, activated carbon on three floors.

初效过滤、高级顶棉过滤，地台玻璃丝棉过滤，活性碳过滤，三层活性碳。

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While Instagram 2.0 is not a new app, it features a completely different system: new buttons added to the interface of the app allow users to see the filter in effect before snapping, shaving seconds off even the iPhone 4 experience.

FORBES: Morning Tech Wrap: Google, Facebook, Microsoft

Users can get creative while shooting in 1080i Full HD Movie with fade effect, so you can transition from art filter to art filter without stopping the movie.

ENGADGET: Olympus E-PL5 and E-PM2: Micro Four Thirds cameras with OM-D-like focusing, performance boosts (hands-on)