山东静音仓 测听室专利产产品墙体厚度10cm,门厚15cm,可隔音30-45DB.墙体20cm双层墙体可隔音40-60DB
外表有聚酯纤维板,铝塑板,实木等,可供选择。


同时有效降低房内房混与回响。















甘肃听力检测室 测听室专利产:http://www.jdzj.com/jiage/5_28740907.html
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