3M 汽车膜的晶锐 70 和朗清系列主要有以下区别： 隔热性能方面，晶锐 70 采用光学微附技术，含多达 240 层光学微附涂层，在阳光 90 度直射时总太阳膜阻隔率是 50%，60 度照射时是 59%，能有效阻隔 97%的红外线和 99.9%的紫外线。朗清系列的隔热性能也不错，但具体 ...

Ever seen a display like the one on the left? That's long been a pesky phenomenon -- known as "head-lighting" -- with many LED edge-lit LCD panels, and 3M's new Uniformity Tape wants to make sure it ...