noise reduction coefficient

... Light Power Supply System 100 - 240V/50-60Hz & 12V-USB Air Circulation Intelligence low voice exhausting system 30+—5d...

Key attributes Material Aluminum Alloy Glass Type double pane tempered clear glass, Low-E Glass, triple insulated glass, double tempered glass Screen ...

... Fire Protection Wall Panel Pet Felt 100% Polyester Fibre Acoustic Panel Product type Polyester fiber panel/PET sound absorbing pane...

0.8 100% Polyester Fiber Acoustic Panel Product Description: Trano Digital Printed Wall Panel Polyester Fiber Acoustic ......

... unit, to ensure the highest quality. 3.3.7v lithium ion battery,it was recharged without replacing batteries. 4.two modes of operation, to choose ...

... Flooring Carpet Modular Floor Tiles for 3x3 Backyard Basketball Court Model No: RCHS-HES Tile Dimension: 250mm*250mm*16mm Material:...

... of roads, highways, elevated composite roads and other sources. It is divided into a purely sound-reflecting reflective sound barr...

... Bluetooth Headset for Gaming Phone Bluetooth Foldable Headset HiFi Wireless Headphones Support Radio Stereo Headset With Mic Deep ...

Dark Blue Noise Reduction Earbuds , Plastic Foldable On Ear Headphones Product description 1. Significant noise reduction up to 97% for travel, work a...

Dark Blue Noise Reduction Earbuds , Plastic Foldable On Ear Headphones Product description 1. Significant noise reduction up to 97% for travel, work a...

... Article No.: B09 Split earbuds Wireless earbuds with immersive sound, active Features Immersive sound Premium speaker drivers deli...

... earphones double wireless charging no delay About this item: ANC The earphone design completely fits the ear, isol...

Sound-Absorbing Tubular Steel Fence Traffic Sound-Absorbing Tubular Steel Fence Traffic is an innovative perimeter sol...

... Product Description: Headphone Earpads provide excellent and comfort for users. It comes with multi-color choice, s...

... earmuffs, match the bluetooth music glasses are perfect group. When you listening to music, wear the earmuffs, you ...

... shielding performance. Corrosion and rust resistance. Durable and long service life. Exhaust Pipe Pad Shape Shape: round, square, ...

Electronic Sound Amplification Earmuff Protection Muffs Headphones for Hunting Products Parameter Place of Origin Chin...

... Audio Isolator for Eliminating Current Sound 1.Product Description Stereo Sound Audio Isolator is a professional de...

... sensor wiring harness with insulation design, it can effectively suppress electromagnetic interference from external interference ...