Mute the use of advanced series of sound-absorbing material, and optimize the internal structure, to achieve the purpose of reducing noise unit.
静音系列采用先进的吸声材料，优化内部结构，达到降低机组噪音的目的。
Mute the use of advanced series of sound-absorbing material, and optimize the internal structure, to achieve the purpose of reducing noise unit.
静音系列采用先进的吸声材料，优化内部结构，达到降低机组噪音的目的。
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