The high-grade water based ink is formulated with nanoscale organic(inorganic) pigment, imported special low molecular water-soluble resin and related additives by certain physical and chemical processes; non-VOC emission, odorless, non-toxic, non flammable, non-explosive, OHS safe; high color strength and clear color transition; used in printing by simply adding water, applicable to a wide range of laminating plastic substrate, such as: OPP, PET, CPP, PA, AL etc.; specially innovated for rotogravure reverse lamination printing with 150m-180m/min high speed. Suitable Application 1. Snack package. Such as: Biscuit bag, Ramen bag etc. 2. Frozen food packaging. Such as: Dumpling bag etc. 3. Pasteurized aquatic products. 4. Food bag of high temperature, high pressure and sterilization.