Postcards, a variety of forms,Postcards, a variety of forms, in addition to commonly used single-chip cards, there are two-piece postcard. It is connected by two single-chip while folded. Fold in the form of the upper and lower pairs of fractures, but also about the right fold. Use, of which one from the sender to write the contents back in another film (Vice-chip) to write their own recipient address, folded after the send. When recipients reply, in writing, Vice-chip can be. Some two-piece printed postcard stamp, no postage, two-piece postcards from the return to the positive film and vice-chip affixed sufficient postage stamps. Two-piece postcard was first used by Bavaria and the German Empire, released in 1872.
China's first of a two-piece postcard Great Qing Postal Service issued in 1898. Two-piece postcard in the domestic and international communications can be used. In 1969, held in Tokyo, the 16th UPU Congress, decided to stop processing at the International Telecommunications twin-sheet postcard business. Postcards are horizontal, vertical distinction, which is in accordance with national (or regional) writing on the form design. From the postcards printed on the front of the stamps affixed ticket plan or location box, name and address grid as the basis to distinguish if they had. Vertical postcards found in China, Japan and Korea. Postcard sold mostly single-chip, there will be a set of pieces bound into a book sale. Cheng
Volumes of postcards, binding wire along its line of perforations to play, easy to sub-Zhang tear. The cost of book binding style is very convenient to use to carry postage postcards. The shape of a postcard, almost all rectangular, and Japan once issued fish-shaped wooden postcards.
