High flow grade.

高流动级。

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Damper: both gas flow regulating button and wind board are high grade PP material, connected with 304 stainless steel bar, manually adjust the outside valve knob, control air flow.

气流调节阀：气流调节扭与挡风板均为高密度PP材质，用304不锈钢方棒连接，手动调节外部阀门旋钮，控制气流量。

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Panel filter: an electro statically charged HAF (High Air Flow media) industrial grade panel filter comes standard on all TSC dryers to help protect the the dryer from ingress of dust.

面板过滤器：过滤器表面采用静电处理，并且使用HAF(其中使用的过滤介质可以承受大气量要求)工业等级的滤芯。

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The earnings-quality grade rewards companies for having high sums of operating and investing cash flow relative to reported earnings (Cisco).

FORBES: A Matter of Trust