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How to detect the UV index of sunglasses anti-UV
Posted On 14/06/2012 04:29:25 by Danny
Style - look at popular
With the personalized of consumer demand, the glasses feature of fashion more and more attention. The choice of style combine with the current popular colors and pop elements. At the same time, with reference to the appropriate style to decide to purchase the frames of what materials will receive a definite purpose.
Color and luster - to see the depth of color
Glasses will put flat on the front, observed mirror legs color whether has depth difference in the same light intensity, sometimes due to processing errors, may have the condition that the color of left and right mirror leg asymmetry.
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Technology - see details
The process is the quality assurance of the glasses frame, pair of spectacles technology whether sophisticated is often reflected in the details of the office.
(1) Near the welding point of the metal frame should pay more attention, to see whether has cracks. Since the thermal effects in the welding changes of stress structure, or cold solder joint, material fatigue make it easy broken when force it.
(2) Whether the two mirror legs smooth. Frames flat on a table, to see whether the point of contact is floating. If there is one side higher than the case, it is necessary to ask the professionals adjusted to the mirror leg, to be achieve the effect of the balance up and down around the symmetry.
(3) The stipule of frames want to pay attention whether both sides are symmetrical, if fixed is safe.
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(4) To metal frames, can be used nails dig and look whether the paint have scratches. To plastic sheet of frames, carefully observe its surface whether had plastic particles, coarse.
(5) Opening and closing its leg, feel the flexibility. Generally, the view of the tight the better is wrong, and that said the lubrication degree of screw is not enough, easy to cause the mirror legs hurt, too loose also is bad, may be caused by the screws not tighten. The tightness moderate is best.
On the label-see material
Gold and titanium this two kinds of metal belongs to the precious metal, so with this two kinds material of frames in the mirror leg will have the corresponding identifier:
(1) GF/GP: GF for gold frame, is about to BoJin piece of welding rolling in other base metal; GP for gold-plated frame, the frame skin which use plating method in other metal.
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(2) Ti-P/Ti-C: Ti is identification which containing titanium material, Ti-P representative pure titanium, Ti-C is representative titanium alloy.
At the same time, frames material has a regulation: producers can't use those materials which due to frame contact with skin and produce undesirable stimulation reaction to make frames. Therefore, when everybody in the choose and buy frames, once found smell weird will add mind's eye.

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