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db(a)

for more than 20 years, soft db has been recognized worldwide for its expertise in acoustical engineering and sound masking technology.
Category:science and education Global Rank:2,084,371 visits:18.8K pages/Per:1.6
international noise awareness day highlights the dangers of noise and its harmful effects on hearing, health, quality of life. protect your hearing, protect your health.
Category:health Global Rank:4,517,374 visits:7.4K pages/Per:1.1
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