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chengjiang(M)road,Jiangyin,Jiangsu,China China
联系人 Mr. NICK ZHANG
办公地址 chengjiang(M)road, Jiangyin, Jiangsu
1).NRR:23dB 2).Can adjust the noise reducing sensitivity and suit for any noisy
1).NRR:25dB 2).Can adjust the noise reducing sensitivity and suit for
1).Solid state circuitry provides hearing protection from noise levels above 85dB. 2).Convenient on / off swit
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