Its safety valve features are compact in structure, good in opening-closing characteristic and low in noise.

其安全阀结构紧凑，启闭性能好，噪声小。

youdao

Its safety valve features are compact in structure, good in opening-closing characteristic and low in noise.

其安全阀结构紧凑，启闭性能好，噪声小。

youdao