① sizing of surface properties (water degrees): writing ink paper surface to prevent penetration and diffusion of performance, writing paper is very important. The maximum width of a special drawing pen dipped in ink, on paper crossed to non-proliferation and impermeable line (mm) Fig. ② smoothness: Under certain vacuum degree, a certain volume of air in the gap by the time the sample surface at a constant pressure between the glass surface required, wholesale NCR, expressed in seconds. ③ surface strength: offset printing paper to prevent paper lint-paste version, two NCR, are required to have good surface strength of the sheet. Wax paper to pull the rod attached pressurized fiber until the wax sticks series, can also be printed applicable measurement speed express their nap. Drawing paper, tracing paper the measure of its resistance to rubbing force, are in the detection of tissue paper surface bonding strength. Hair color principle on paper, the paper is coated with a back coating paint CB, NCR, CB coating main material is a microcapsule, NCR triple to Diphenylethylane as carrier capsule containing crystalline violet lactone (referred to as CVL). In front coating paper and lower paper coated with paint CF, CF coatings is mainly composed of phenolic resin or zinc species, or phenolic resin and zinc salicylate graft copolymer produced. When there are different materials of paper Dangtu contact with each other, and the color reaction does not occur only when printing or writing, microcapsules by external force, cyst rupture, Diphenylethane bag to contain the flow of CVL color coated with a resin coating, the chromogenic material and the color developing substance will react color, resulting in writing. NCR factory, Jinzhou Paper (online consultation), NCR provided by the Xinxiang City, New Materials Co., Ltd. Jinzhou. Xinxiang City, New Materials Co., Ltd. Jinzhou (www.hnjinzhou.com) Henan Xinxiang, a leader in paper and paper processing, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Jinzhou Paper in leadership with the staff warmly welcome all inquiries negotiations to create a better future Jinzhou Paper.