The present invention has long service life and high braking reliability.
本发明使用寿命长，制动可靠好。
Compact design, long life and high reliability.
设计紧凑，寿命长，可靠度高。
The utility model is characterized in high safety and reliability, low cost, long service life;
本实用新型具有安全可靠性高、成本低、使用寿命长的特点；
The utility model is characterized in high safety and reliability, low cost, long service life;
本实用新型具有安全可靠性高、成本低、使用寿命长的特点；
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