This product is an environmental protection printing ink that do harmless to human-body because it adopt ion water to be solvent which not burn, not explode and not pollute environment. It has passed EU SGS examination, and US FDA certification. Printing ink possesses excellent applicability of printing with good fluid, good dryness, good dissolution, strong infiltration, no sticky again and no blurring printing plate. It has many effects such as strong conglutination, clear printing mark, complete net point, no damage layer, fresh color, good superimposition, high luster and vivid drawing. It possesses good wearing-resistance, toughness and water proof because ink film of printed object will turn into water infusibility substance after drying. Water resistance and anti-freeze performance are good. Ink possesses good PH value and stability and easy to store. Ink is easy to dissolve in the water, easy to wash printing machine and applicable to all sorts of printing machine with medium and high speed. This product can be diluted by water according to printing requirement, which insure worker health and is helpful to safe work to degree. This product is applicable to intaglio printing press and flexographic press with wide and narrow range, which can be widely used to many kinds of printing such as kraft paper, coated art paper, corrugated paper, self-adhesive paper, white plated paper, paper box, paper packing bag, book and magazine, especially for stick fields of requirement of sanitary condition such as food, drink and medicine. Note (color can be adjusted according to requirement)