The optical performance ① whiteness: white or near-white on blue paper surface reflectivity supply NCR, magnesium oxide board with respect to the standard reflectance expressed as a percentage. ② Opacity: In a single specimen in the "total absorption" reflectance black liner, and a number of sheets completely opaque reflectance samples represent the percentage rate. ③ Transparency: the degree of light through the paper. In the sample can see the ink lines represent the largest number of layers. Optical performance is more important for printing and scanning maps. NCR is a reaction to rely on chemical material (colorless dye and developer) to achieve the color effect of carbon, it is with a conventional carbon fundamental difference is the color reactions of chemical materials used to replace the original was painted wax color. NCR | Jinzhou Paper | wholesale NCR provided by the Xinxiang City, New Materials Co., Ltd. Jinzhou. NCR | Jinzhou Paper | wholesale NCR Xinxiang City, New Materials Co., Ltd. Jinzhou (www.hnjinzhou.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Wang Qiang.