Due to the compressed air pipe internal may produce pollution, so in the air into the powder coating system best filter processing after before.

由于在压缩空气管道内部可能产生污染，所以在空气进入粉末涂装系统之前最好经过过滤处理。

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Current waveform: usually filter, the better for the coating structure of uniform.

电流波形：通常滤波度越好，镀层组织越均一。

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Add filter aid agent and methods have pre-coating method and blends method.

加助滤剂和方法有预涂法和预混法。

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A protective coating of colloidal silver is painted on the inside and outside of the filter to kill bacteria.

VOA: special.2009.06.22

Each disc is covered in a transparent plastic coating (either blue, green, yellow or red) which lets daylight filter through.

WSJ: Daniel Buren's Bright Periphery | 'Excentrique(s) Travail In Situ' at the Grand Palais in Paris