本发明具有适用温度范围广，耐疲劳强度高，使用寿命长。
The heat-resisting bellows diaphragm valve has the advantages of wide applicable temperature range, high fatigue resistance and long service life.
本发明具有适用温度范围广，耐疲劳强度高，使用寿命长。
The heat-resisting bellows diaphragm valve has the advantages of wide applicable temperature range, high fatigue resistance and long service life.
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