博文

目前显示的是 九月, 2017的博文

Why SAN YOUNG uses PC lens on LED Light Bars and LED Work Lights?

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Why SAN YOUNG  use s  a PC lens on  LED Light Ba rs and LED Work Lights? Now nearly no manufacturers are using tempered glass as an LED Light Bar lens because of it’s fragility, big density, and also the risk of material storage and transferring. If someone is still using tempered glass on  LED Light Bar, the only explanation is because of its cheap cost! Manufacturers are mostly using PMMA (polymethyl methacrylate Acid ) and PC   ( Polycarbonate )   as the lens of LED Light Bar  or LED Work Lights .   Although they are the best option in plastic  category  for LED Light Bar lens ,   San Young Lights still insists to stick with PC Lens for its best performance. Firstly l et’s see the comparison of PC again PMMA. Material D ensity Light     Transmittance T emperature R esistance Scratch     resistance I mpact R esistance Glass 2.5 75% 600 °C Good Fragile PMMA 1...

Why Moisture in LED Light Bar ?

Why Moisture in LED Light Bar? As a wholesaler, are you having too many LED Light Bars returned from your customers with moisture inside? Wonder Why Moisture in LED Light Bars? Wonder how to select a good LED Light Bar before you send it to your customers to destroy your fame? Firstly, Let ’ s see which reasons cause moisture. 1, If a n   LED Light Bar  is sealed well but in the production, the high humidity air is not dried totally.  If the LED Light Bar has been working for more than one hour and it suddenly rains, the vapor turns into liquid because of a cold snap. This happens mostly with  the LED Light Bars which were produced in wet weather ( October in China ) 2, If an LED Light Bar  is not sealed well, the temperature inside gets down when you turn it off  after one-hour working . The vapor gets inside with air because of negative pressure. Then next time the vapor inside an LED Light Bar turns into moisture like the situation...