Chat
Online
Inquiry
Home > index helmet motorcycle

index helmet motorcycle

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.

Why Choose Us
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

We abide by the privacy policy and human rights, follow the business order, do our utmost to provide you with a fair and secure trading environment, and look forward to your customers coming to cooperate with us, openly mind and trade with customers, promote common development, and work together for a win-win situation..

24 / 7 guaranteed service

The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems

Certificate of Honor
Get in touch with usCustomer satisfaction is our first goal!
Email us
— We will confidentially process your data and will not pass it on to a third party.
index helmet motorcycle
Acoustic Insulation and Soundproofing Values
Acoustic Insulation and Soundproofing Values

Rw stands for Weighted ,Sound, Reduction Index, used to determine the effectiveness of a soundproofing material and it presents a single figure ,method, showing the amount ,of sound, which is stopped by a dividing element such as some acoustic ,insulation, material. It is applied in laboratory tests of airborne ,sound insulation,.

4 Types of Insulation for Your House (Pros & Cons) - Home ...
4 Types of Insulation for Your House (Pros & Cons) - Home ...

There are 4 common ,types, of ,insulation, that can alter the heat inside your house depending on the weather conditions outside. They are as follows: 1. Spray Foam ,Insulation,. This kind of ,insulation, is done with aid of spray holders. Foam is sprayed from the containers in specific places of the house.

Insulation Types | Residential Thermal Sound Fire Health
Insulation Types | Residential Thermal Sound Fire Health

Sound insulation, and ,sound, absorption. Fiber glass ,insulation, and mineral wool ,insulation, – Noise Reduction Coefficient (NRC) of up to 1.00 10 (with NRC, higher is better). Spray foam ,insulation, and cellulose ,insulation, – Achieve an NRC of .75. 10; Fire Protection. Fiber glass ,insulation, and mineral wool ,insulation, – are naturally non ...

SOUND INSULATION CONSTRUCTIONS AND METHODS OF …
SOUND INSULATION CONSTRUCTIONS AND METHODS OF …

Sound insulation, constructions, multilayer constructions for acoustically insulating a source ,of sound, from a receiver that include one or more ,sound insulation, constructions, structures comprising one or more ,sound insulation, constructions and/or multilayer constructions, and a ,method, for acoustically insulating a source ,of sound, from a receiver.

Types of Insulation - The Home Depot
Types of Insulation - The Home Depot

Insulation, decreases the amount of heat entering from outside when it’s hot, and traps warmth inside when it’s cold. ,Insulation, is rated by its R-value. R-value measures how resistant ,types, of ,insulation, are to heat flow. R-values vary based on the type, thickness and density of the ,insulation, material.

Insulation for Buildings -Types Materials and Methods of ...
Insulation for Buildings -Types Materials and Methods of ...

Various ,types, of Foam ,Insulation,; Among the mentioned ,types, of ,insulation,, the mineral wool is widely used. These materials are either rock wool or the fiber glass type. The mineral wool material can be provided in the form of blankets or poured ,insulation, or blown ,insulation, and batts. These blankets come in the form of rolls.

Insulation Types | Residential Thermal Sound Fire Health
Insulation Types | Residential Thermal Sound Fire Health

Sound insulation, and ,sound, absorption. Fiber glass ,insulation, and mineral wool ,insulation, – Noise Reduction Coefficient (NRC) of up to 1.00 10 (with NRC, higher is better). Spray foam ,insulation, and cellulose ,insulation, – Achieve an NRC of .75. 10; Fire Protection. Fiber glass ,insulation, and mineral wool ,insulation, – are naturally non ...

SAFE'n'SOUND Sound Proof Insulation | ROCKWOOL
SAFE'n'SOUND Sound Proof Insulation | ROCKWOOL

Fire & Soundproof ,Insulation, . ROCKWOOL SAFE‘n’,SOUND,® is a stone wool ,insulation, product for use in interior wall partitions, floors, and ceilings of residential wood and steel stud construction. It is especially useful when superior fire resistance and acoustical performance are required.

SAFE'n'SOUND Sound Proof Insulation | ROCKWOOL
SAFE'n'SOUND Sound Proof Insulation | ROCKWOOL

Fire & Soundproof ,Insulation, . ROCKWOOL SAFE‘n’,SOUND,® is a stone wool ,insulation, product for use in interior wall partitions, floors, and ceilings of residential wood and steel stud construction. It is especially useful when superior fire resistance and acoustical performance are required.

Methods of Acoustics and Sound Insulation | CustomWritings
Methods of Acoustics and Sound Insulation | CustomWritings

Methods, of Acoustics and ,Sound Insulation,. Acoustics and ,Sound Insulation,. ABSTRACT. Acoustics is the study ,of sound,. The knowledge of this field is necessary as it helps in creating peaceful surroundings. The technical knowhow ,of sound insulation, has been helpful in constructing functional theatres, hospitals, Auditoriums, jam pads, etc. ,Sound, ...

Sound Insulation - an overview | ScienceDirect Topics
Sound Insulation - an overview | ScienceDirect Topics

P.S. Liu, G.F. Chen, in Porous Materials, 2014. Excellent ,Sound Insulation,. The ,sound insulation, effect of polymer foams comes into play in the following two ways: (1) the porous body absorbs ,sound, wave energy to terminate the reflection and transferal of the ,sound, waves; (2) the porous body eliminates resonance and decreases noise. When the ,sound, wave arrives at the cell wall of a pore in ...

Acoustic Insulation and Soundproofing Values
Acoustic Insulation and Soundproofing Values

Rw stands for Weighted ,Sound, Reduction Index, used to determine the effectiveness of a soundproofing material and it presents a single figure ,method, showing the amount ,of sound, which is stopped by a dividing element such as some acoustic ,insulation, material. It is applied in laboratory tests of airborne ,sound insulation,.

Sound Insulation - an overview | ScienceDirect Topics
Sound Insulation - an overview | ScienceDirect Topics

P.S. Liu, G.F. Chen, in Porous Materials, 2014. Excellent ,Sound Insulation,. The ,sound insulation, effect of polymer foams comes into play in the following two ways: (1) the porous body absorbs ,sound, wave energy to terminate the reflection and transferal of the ,sound, waves; (2) the porous body eliminates resonance and decreases noise. When the ,sound, wave arrives at the cell wall of a pore in ...

Methods of Acoustics and Sound Insulation Essay - Free ...
Methods of Acoustics and Sound Insulation Essay - Free ...

Acousticss and ,Sound Insulation, Abstraction Acousticss is the survey ,of sound,. The cognition of this field is necessary as it helps in making peaceable milieus. ",Methods, of Acoustics and ,Sound Insulation, …

Insulation for Buildings -Types Materials and Methods of ...
Insulation for Buildings -Types Materials and Methods of ...

Various ,types, of Foam ,Insulation,; Among the mentioned ,types, of ,insulation,, the mineral wool is widely used. These materials are either rock wool or the fiber glass type. The mineral wool material can be provided in the form of blankets or poured ,insulation, or blown ,insulation, and batts. These blankets come in the form of rolls.

4 Types of Insulation for Your House (Pros & Cons) - Home ...
4 Types of Insulation for Your House (Pros & Cons) - Home ...

There are 4 common ,types, of ,insulation, that can alter the heat inside your house depending on the weather conditions outside. They are as follows: 1. Spray Foam ,Insulation,. This kind of ,insulation, is done with aid of spray holders. Foam is sprayed from the containers in specific places of the house.

SOUND INSULATION CONSTRUCTIONS AND METHODS OF …
SOUND INSULATION CONSTRUCTIONS AND METHODS OF …

Sound insulation, constructions, multilayer constructions for acoustically insulating a source ,of sound, from a receiver that include one or more ,sound insulation, constructions, structures comprising one or more ,sound insulation, constructions and/or multilayer constructions, and a ,method, for acoustically insulating a source ,of sound, from a receiver.

Methods of Acoustics and Sound Insulation Essay - Free ...
Methods of Acoustics and Sound Insulation Essay - Free ...

Acousticss and ,Sound Insulation, Abstraction Acousticss is the survey ,of sound,. The cognition of this field is necessary as it helps in making peaceable milieus. ",Methods, of Acoustics and ,Sound Insulation, …

Methods of Acoustics and Sound Insulation | CustomWritings
Methods of Acoustics and Sound Insulation | CustomWritings

Methods, of Acoustics and ,Sound Insulation,. Acoustics and ,Sound Insulation,. ABSTRACT. Acoustics is the study ,of sound,. The knowledge of this field is necessary as it helps in creating peaceful surroundings. The technical knowhow ,of sound insulation, has been helpful in constructing functional theatres, hospitals, Auditoriums, jam pads, etc. ,Sound, ...