Jc-gb31 67 is a pneumatic speaker, which is suitable for the detection of mobile phones, earphones, small speakers or audio equipment. The speaker is made of Fanjin, which has the advantages of light halo, high strength, good sound insulation and tightness, firm structure, simple and labor-saving operation. It is an economic and practical sound insulation test box at present.
? audio test;
?Provide sound insulation test environment for product noise test
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