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#1 11-08-2017 07:17:32

Date d'inscription: 11-07-2017
Messages: 16

Chinese performance criteria of the current product for basic requirem

In November 2006,GB10810.3 "spectacle lenses and related products - Part 3: In the formal implementation of the transmittance specification of measurement method",is well-defined ultraviolet transmittance exceed 5% It is used as becoming not lens.Sunglasses,following which generally are clearly,has a UV function:A) is displayed as "UV400": This is a 400nm of transmittance following wavelength (λ) spectrum (λ) lens of the UV cut-off wavelength at 400nm with less than 2% τmax maximum,it means.B) "UV",labeled "UV": This is the lens of the UV cut-off wavelength from 380nm,i.e.,the maximum of the spectral transmittance (λ) is less than 2% its wavelength (λ) τmax is 380nm it means that it is less.C) and the "absorbing 100% UV" labeled: means that this is a lens has a 100% ultraviolet absorption function,an ultraviolet region,
Fashion Sale Newbalance     ie,the average transmittance of 0.5% or less To do.Sunglasses,to meet the above requirements,it is the true meaning of sunglasses of UV protection.an important indicator UV performance of sunglasses if we can not identify with the naked eye,sunglasses with UV protection function.Chinese performance criteria of the current product for basic requirements of UV only,the wearer can harmless.Protection,although an explicit commitment by major manufacturers,consumers,as you want to identify the only factory in order to express the commitment to the product as a product whether a measure having an ultraviolet protection,all of sunglasses It does not have the product of UV function.
Venta Al Por Mayor Barata Zapatos NikeLimitation of colorTo observe the lens average daylight you saw through the analog yellow and green traffic signal lens,standard state: color,corresponding coordinates to be placed in the chromaticity diagram in the corresponding area (Figure 1).If the coordinate value measured color is beyond the limits of a given color gamut,various traffic signals will lead to confusion,it is one of the risk of traffic accidents.Transmittance of the traffic signalAppears to be specified in the corresponding standard of the traffic signal transmittance,red,yellow,observed through the green signal of the lens: is the red signal should have% ≥8,yellow and green signals% ≥6 should order to,not only the ability to identify a low signal when the colored too traffic signal transmittance,

Nike Fashion Shoes Roshe RunI will reduce the risk of one traffic accident.MarkTo marking requirements,each pair of glasses,(such as QB2457) run standard code,category (or light-colored sunglasses,such as a mirror of the sun),you need to mark the production and the name and trademark.The choices available to the consumer to choose the right sunglasses,marked category,you can and Motozukuko ?? to usage and location.Impact resistanceEXPRESS,in order to have a protective function of the lens,or conforming to ANSI (American standard),must be able to withstand the high 1.27 meters impact without fragmenting the 16 g bowl freefall Hmm.Index is the minimum requirement in order to have a protective glasses.
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