Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
Solutions to meet different needs
We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
Highly specialized team and products
Professional team work and production line which can make nice quality in short time.
We trade with an open mind
24 / 7 guaranteed service
The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems
INVESTIGATION OF USABILITY OF RECYCLED MATERIALS IN ...
data the maximum sound attenuation value of the earmuffs, which is created using egg carton and re-cycled fiber, is 21 dB, while the minimum sound at-tenuation value is measured as 19 dB. The average sound attenuation value was determined to be 20 dB. FIGURE 3 Noise Cancelling Levels In the 2nd combination, instead of the insula-Get Price Send E-mail
Sound Blocking Ear Muffs and Soundproofing Headsets for ...
Super Soundproofing Co™ is a leading provider of ,sound, blocking ,ear muffs,, light weight soundproofing headsets/,earmuffs, for control acoustical noise and ,sound,. ... Almost the BEST!The NRR in ,dB, is 25, ... Over Head -Wide frequency reduction up to 37.4 Highest ,average sound, blocking.Get Price Send E-mail
How to Choose Shooting Earmuffs: Selection Guide
How to Choose Shooting ,Earmuffs,: Selection Guide. Did you know the ,sound, of gunfire is the most hazardous non-occupational noise that Americans are exposed to? It's possible that a single shot with an unprotected ear can lead to immediate and permanent hearing loss, often accompanied by tinnitus (ringing, hissing, or humming in the ears).Get Price Send E-mail
Best Shooting Ear Protection – | Top 10 REVIEWS – Nov 2020
While taking shots, our delicate auditory organs are hit by a gush of ,sound, waves that could range from an astounding 140 ,dB, to 190 ,dB,, far higher than the human tolerance level of 80dB. This explosive ,sound,, transferred through the air and bodily vibrations, should be controlled by ,ear muffs, or earplugs to avoid permanent ear damage and other health hazards.Get Price Send E-mail
Ear Muffs: Bringers Of The Sound Of Silence | TopEarMuffs.com
An ear muff will generally block (or attenuate) the sound by 23 dB – as tested in the controlled conditions of a laboratory. However, these results rarely match the attenuation in real life – which is much lower. Studies show that an ordinary ear muff may attenuate sounds from 33% to 74%, allowing some noise to go through the material.Get Price Send E-mail
Harmful Noise Levels
A ,sound,'s loudness is measured in decibels (,dB,). Normal conversation is about 60 ,dB,, a lawn mower is about 90 ,dB,, and a loud rock concert is about 120 ,dB,. In general, sounds above 85 are harmful, depending on how long and how often you are exposed to them and whether you wear hearing protection, such as earplugs or ,earmuffs,.Get Price Send E-mail
Wearing Earplugs with Earmuffs: Extra Hearing Protection ...
The highest level of protection that you can get from earmuffs is 31 dB. It’s estimated that 97 percent of industrial work environments do not exceed 100 dB. This means that in the vast majority of work environments one or the other will provide ample protection.Get Price Send E-mail
BRINKO Tools | Ear muffs | purchase online
Ear muffs, - • ,average sound insulation, • fully insulated plastic design • SNR (averaged ,sound insulation,) 24 ,dB, • frequency ranges:   H (high) 27 ,dB,   M (medium) 20 ,dB,   L (lowGet Price Send E-mail
Audiometer - rion.co.jp
Hearing Level: -10 to 90 dB, 5-dB step Average Sound insulation value of earmuff Environmental Noise Monitor Possible for Measurement (Green light is lit.): 1000 Hz: 30 dB or less, 4000 Hz: 30 dB or less Caution needed for measurement (Yellow light is lit.): 1000 Hz: …Get Price Send E-mail
Newest Anti-noise sound insulation earmuffs Prevent noise ...
Newest Anti-noise ,sound insulation earmuffs, Prevent noise sleep: Amazon.in: Home Improvement. Skip to main content.in Hello, Sign in. Account & Lists Account Returns & Orders. Try. Prime Cart. Tools & Home Improvement. Go Search Hello Select your ...Get Price Send E-mail