Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life.

精密铸造球铁齿轮，噪音低，耐磨度高，使用寿命长。

youdao

Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life.

精密铸造球铁齿轮，噪音低，耐磨度高，使用寿命长。

youdao