欧美日韩一区二区区别是什么,黄色AV免费在线观看,5566亚洲精华国产精华精华液,无码人妻h动漫网站,欧美黄片久久精品

This printing mode is divided into two kinds: 1. The carving of the concave - the image deep strong, ink concentration is very high, in the image part with micro convex and with a slightly concave phenomenon in the back. 2. Gravure or intaglio rotary, the ink layer is thin, stamped around some of the jagged, and sometimes tailing phenomenon, lines, it's hard to see the dot was fuzzy phenomenon.

This printing mode is divided into two kinds: 1. The carving of the concave - the image deep strong, ink concentration is very high, in the image part with micro convex and with a slightly concave phenomenon in the back. 2. Gravure or intaglio rotary, the ink layer is thin, stamped around some of the jagged, and sometimes tailing phenomenon, lines, it's hard to see the dot was fuzzy phenomenon.