Jams white cardboard and cardboard glass. White cardboard paper firm, white and smooth. Shiny glass card paper. Jams expensive, it is generally used for wine, gift box, cosmetic, logo, and other high-end product packaging. Kraft Kraft itself gray color gives a simple sense, perhaps like much, but it is environmentally friendly, export fen basically all kraft box and it is inexpensive and affordable. Coated points simplex and duplex two kinds. Coated paper is mainly the use of advanced materials wood, cotton fiber and other refined. Per square meter at about 100-300 g, 250 g or more called copperplate white card. Paper coated with a layer of white paint, adhesives, paint and various auxiliary additive composition, the super calendar, paper white, smooth and high adhesion large, waterproof and strong, after the ink can be printed up revealing bright white, suitable for multicolor offset printing. India colorful, varied levels, clear graphics. The pH value of the dampening water refers to what? PH value is expressed as a wetting liquid containing acid, alkali content value (concentration) Dongguan PVC box printing, with the negative logarithm of the hydrogen ion concentration of the acid solution representation sex. ph = 7 is neutral solution Dongguan cosmetic box printing, pH> 7 is alkaline solution, pH. Production of the wetting liquid pH value should be controlled to what extent? PS version of the wetting solution pH value, the general control between 5 and 6 students is appropriate. . Wetting liquid PH value control inappropriate Dongguan high-end box printing, product quality impact acidity stronger:? Likely to cause the plate flower version, dot smaller box printing, reduce the printing press run, ink is easy to emulsify , resulting blots not easy to do, on the back of the product, such as quality of offset ills. Acidic weak: the printing outlets easy to paste, easy and, easy to play dirty, resulting paste version, dirty and so on. Dongguan box printing, box printing, beyond printing by the Dongguan City, often beyond packaging products factory provided. Dongguan Chang-ping beyond packaging products plant (www.dgcyp.com) strong, credible, in Dongguan, Guangdong paper printing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead beyond printers and you hand into the brilliant, for a better future!