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Mini Handheld Digital Noise Meter 30-130dba 31.5Hz-8kHz 4 Digit 2s Mch-1351 Sound Level Meter, Find Details and Price about Sound Level Meter Sound Meter from Mini Handheld Digital Noise Meter 30-130dba 31.5Hz-8kHz 4 Digit 2s Mch-1351 Sound Level Meter - Shenzhen Meichuang Instruments Co., Ltd