The Chinese version is collotype. The printing of the Feilu version is a category of lithography. Is one of the earliest photolithography, due to the use of thick frosted glass as a base, coated with gelatin and dichromate solution, made of photosensitive film, negative film with a negative film deposited on the exposure, made of printing plate. Therefore, it is also called "glass printing."

The process flow is: grinding glass → coating photosensitive liquid → contact exposure → developing, wetting treatment → printing. It was invented by the photographer Haier of Munich, Germany, in 1869. Qing Guangxu was introduced into China in the early years. In 1876, Shanghai Youzhe Publishing House first used this technology to print the printed matter. Later, the Silom version of the technology gradually showed special charm in the production of manuscripts and paintings.

Unlike the offset printing of the Milo Edition and the offset printing, there is no intermediate rubber roller transfer image, but the printing plate is directly contacted with the embossing mechanism (imprinting cylinder) for ink transfer, which is a direct lithography method. Its characteristics are: low resistance to printing, generally only about 500 print, can realistically reproduce the original level, copying effect is good, high cost, and requires a high level of technology.

The Milo Edition has irreplaceable features of other printing processes. Offset has dots, and the formation of the principle of three primary colors, it is inevitable that there is a color deviation; woodblock watermark is the disadvantage of the manual knife, deformation, and the knife marks can not be difficult to remove, if compared with the original, then go a lot.

The Feiluo printing was not. The Feiluo printing is all manual operation. The plate-making network cable is extremely thin, and the ink color is excellent. The density of the irregular wrinkles expresses the depth and depth of the screen. The printed products have no dots and clear shades. And it is a spot color imprinting, no color deviation, can fully display the color matching of calligraphy and painting art, rich levels of ink Yun Yun fun. At the same time, the painter personally applies local polish to make it icing on the cake. Its effect can surpass the lithographic and relief prints, and it is most suitable for printing exquisite and high-quality artworks such as celebrity paintings, inscriptions, precious pictures, and cultural relics. In addition to being printed on paper, it can also be printed on silk and silk.