Alloy steel via heat treatment, grinding blade, enable to keep sharp edge and high precision.

合金钢材质经热处理，研磨修边刀，刀口锋利，精密度高。

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Clean the shave after each use to keep the cutting edge sharp.

每次使用完后要清理电动剃须刀以保持刃口锋利。

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Sharp blade key: hand must keep horizontal motion, force must be uniform and owner. on back must be straight or round straight, nearly edge department can not have a little hunchback.

刀刃锋利的关键所在：手必须保持水平运动，力必须均匀，刀背必须保持平直或圆直，近刃口部不得有一点驼背。

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Several well-placed surprises and unexpected turns not only keep you on edge but also give you the verbal equivalent of sharp slaps in the face.

FORBES: Fact and Comment