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.
Numbness of brain after wearing 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
A good rule-of-thumb is to only ride using a flip-up helmet for riding while in the closed position. Open Face Helmet (3/4 Helmet) The open face, or “three-quarters”, helmet covers the top and back of the head as well as the ears, but lacks a chin bar like that of the full-face helmet.
Some went further, giving different ,helmets, to various units, so the commander could identify the ,position, of each unit at all times. Sometimes the shape of the ,helmet, and its decoration came from a tribal or other tradition and served no military purpose.; Interestingly enough, ancient ,helmets, never covered the whole face, as they did later in European armor.
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[The test line is a line drawn around the ,helmet,, below which the ,helmet, is not tested.] ,Helmets, that transmit more than 250 G’s to the headform during impact testing fail EN-1078. The other standards mentioned here allow for up to 300 G’s. Read more on EN-1078. ,Helmet, Certification: ASTM F1952 / The Downhill Mountain Biking Standard
If your head is longer front-to-back than side-to-side, then a long oval helmet will most likely fit best, if it’s only somewhat longer front-to-back than side-to-side, an intermediate oval helmet will be most comfortable, and if the front-to-back and side-to-side dimensions are about the same, a round oval helmet will fit best and provide the most comfort.