Specifications: length 8.8 cm wide 4.7 cm thick 0.03 cm Material: copper How long have you not read the paper books and read them? I hope that bookmarks will be the beginning of the collection, leading you to re-enter the world of reading. The iron window flower was introduced to Taiwan in about 1920. It is a folk decoration craft made of black iron as a material through a complicated process. The window pattern has no standard of standard, and it is made by craftsman, often in a straight line or arc. The geometric pattern of the composition is the most common, and each piece of iron window can be said to be a masterpiece of "manual order" by the master. However, with the iron window of mechanical production gradually replacing the iron window flower, the production of iron window flower has entered the history. In order to reproduce this beautiful window, the metal material-copper and etching technology is adopted, so that the window flower spirit is heavy. Now.