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, expressed in seconds. ③ surface strength: offset printing paper to prevent paper lint-paste version, printing carbonless paper is 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. Paper, is the ancient Han Chinese working people is an important invention. Ancient times, the ancestors mainly rely on rope Chronicle, then gradually invented writing, starting with bones as a writing material, and later discovery and use of bamboo and wood and fine silk as writing material. However, due to fine silk, too expensive, non-carbon paper tree, bamboo too bulky, non-carbon paper, so they produce a paper. One of the four great inventions of ancient China, paper and the compass, use carbonless paper, gunpowder, printing together, to the prosperity of ancient Chinese culture provides the foundation material technology. The invention of paper ended the complicated history of the ancient bamboo slips, greatly contributed to the spread and development of culture. Papermaking is Han working people and the long-term accumulation of experience wisdom, for writing, printing, painting or packaging sheet fiber products. Buy carbonless paper | Jinzhou Paper (Online) | carbonless paper provided by the Xinxiang City Jinzhou New Materials Co., Ltd .. 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.