The technical department of Shandong Hucai Technology and Tianjin Toyo Ink Co., Ltd. collaborated to test the embossed varnish process on a five-color offset press using an on-line optical unit to realize the use of offset printing to achieve matte and localized printing on the surface of the printed product. Light effect. This process is mainly through the chemical reaction between the offset base oil and the connecting roller coating varnish, so that the smooth surface of the original coating appears uneven uniform fine pattern. And can achieve different printing effects by adjusting the ratio between the two kinds of varnish. This printing process makes use of the high overlay accuracy of the offset printing press, which can realize more precise printing pattern overprinting and increase the difficulty of imitation; and the range of varnish printing is relatively wide, and it is suitable for various packaging applications such as white paper and gold and silver cardboard. Paper, using this printing and packaging process can not only improve the aesthetics of the product packaging but also improve the protective function of the product packaging. Shandong Tiger Color Technology Department has organized many times of product proofing for this process, and the product's printing effect has been widely recognized.