The production method is that, on the one hand, by adding ultraviolet-absorbing metal oxides in the glass while using the color-complementary effect, some colored metals or their oxides are added to discolor the colored glass.
A random sampling test of light transmittance at a wavelength of 330 nm for a UVA glass and normal glass having a thickness of 3.5 mm shows that ordinary glass is 60.6% and UVA glass is only 2.5%. Exposure to sunlight in ordinary glass bottles and UVA glass bottles also showed that the former had a much higher degree of discoloration and deterioration than the latter.
Brighten up your children`s rainy days with the Hyades Auto Open Umbrella. With vibrant coloured panels and a curved handle ideally sized for those small hands, this umbrella is sure to be a winner in the kid's eyes. The umbrella features an easy push button auto open keeping those tiny fingers pinch-free!
Our Kids umbrellas are designed with small children in mind in that they are smaller in size than the regular adult variety. Small sized umbrellas with smaller handles are more comfortable for small children to use with their tiny hands. They can feel independent, opening their own umbrella when the need arises and then stowing the umbrella away when it is not in use. At Hyades, we feature a myriad of designs that will appeal to children of all ages. With a wide range of prints to choose from, the child can surely find the perfect one that meets his or her unique preference. Whether your little costumer adores animals, laces, or particular cartoon characters, there is always an umbrella design available with features any of these popular print options.
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Hyades Umbrella Co., Ltd. , http://www.hyadesumbrella.com