High quality, Medium soft cloth backing. Suit for making flap disc, flap wheel and so on. For polishing and finishing complex surface of furniture.

优质中软布基砂带，主要用来做八辫砂、丝轮、气鼓、软基砂碟。主要用于：家俱行业的异型曲面的磨削和抛光。

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Butterfly valve is closed parts (valve flap or disc for disc), around the valve axis of rotation to achieve the open and close a valve, in the pipeline mainly as shut off and throttling effect.

蝶阀是指关闭件(阀瓣或蝶板)为圆盘，围绕阀轴旋转来达到开启与关闭的一种阀，在管道上主要起切断和节流作用。

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Also known as butterfly flap valve imports, is to open and close with a round disc with the stem pieces and turn to open, close and adjust the fluid channel of a valve.

进口蝶阀又叫翻板阀，是用圆形蝶板作启闭件并随阀杆转动来开启、关闭和调节流体通道的一种阀门。

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