prolon

The optimum operating parameters is the important way to improve seal performence of pump valve and to prolon...

因此，优化泵工作参数是提高泵阀密封性能、延长其使用寿要途径。

rectangular blades with four cutting edges to prolon working life, adjustable shearing angle to reduce deformation of the sheet.

矩形刀片，四个刃口使用，使用寿长。剪切角，少板料扭曲变形。