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.
Classification of motorcycle safety helmet
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.
Professional team work and production line which can make nice quality in short time.
The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems
Address：No. 3888, Hutai Road, Baoshan District, Shanghai, China
3/11/2020, · The product meets your enough needs. ,Noise reduction ear plugs, for sleeping, snoring, concerts, club, and loud events. 【,Earplugs, of two shapes】Our sleeping ,earplugs, are two-layers structures, smaller and more concealed, and ergonomically designed. ,One ear plugs, for concerts is the head inclined shape, the other sleeping ,ear plugs, are straight.
The performance of ,earplugs, and ,earmuffs, varies between brands and styles. ,One, way to choose a hearing protector is to compare ,Noise Reduction, Ratings. The ,Noise Reduction, Rating, or NRR, measures the muff's or plug's ability to block out ,noise, or "attenuate"; sound.
Noise Reduction, Rating (NRR) of 31 dB along with over the head ,hearing protection,. Highest ,noise reduction earmuffs, for high ,noise, areas. Designed to reduce heat buildup with proper fit and balance. Tilting earcups to ensure comfort and a proper fit for all users. The wires are electrically insulated to avoid electrical hazards; Unique Qualities
Using both ,ear muffs, (whether passive or active) ,and earplugs, simultaneously results in maximum protection, but the efficacy of such combined protection relative to preventing permanent ear damage is inconclusive, with evidence indicating that a combined ,noise reduction, ratio (NRR) of only 36 dB (C-weighted) is the maximum possible using ,ear muffs and earplugs, simultaneously, equating to only ...
The higher the ,Noise Reduction, Rating associated to a particular hearing protector, the ,better, it will work in terms of ,noise reduction,. We recommend to take a look at the ,ear plugs, with highest NRR. When you’re wearing a ,hearing protection, device, your level of exposure to the ,noise, is based on the NRR rating of that particular device.
25 db ,noise reduction, rating: ,Ear muffs, attach to a hard hat and provide ,hearing protection, with an NRR of 25 db for moderate to high ,noise, exposures Advanced technologies: New innovative foam ear cup inserts and spacers help improve attenuation along with new ear cushion foam technology for an effective acoustic seal and reliable protection
3M Peltor X3 ,earmuff, is over-the-head ,hearing protection, with ,Noise Reduction, Rating (NRR) of 28 dB for moderate to high ,noise, exposure. The X3 features a newly designed spacer to help improve amplification without the need for a much larger cup or double cup design.
24/10/2018, · Figure 1: Selection of different ,hearing protection, devices – ,Earplugs,, ,Earmuffs,, and Earbands . 1) Know How Much ,Noise Reduction, You Need. Obviously, the first consideration in choosing a hearing protector is whether it will block enough ,noise, to reduce your exposure to a safe level.