Eye chart

https://i.imgur.com/s0K7act.jpg https://i.imgur.com/JyXLehs.jpg Eye chart ☜【Taiwan impression square coaster】 Size: 9cm x 9cm Thickness 5mm Material introduction: tinplate/soft magnetic Usage: The coaster can also be stored as a refrigerator or work desk. [The origin of tinplate name] Tinplate was originally called the tin plate and its official name was tin-plated steel. Because the first batch of iron bars in China was imported from Macao in the middle of the Qing Dynasty, and Macao was transliterating “Makou” at the time, it was generally called “tinplate”. The application of tinplate is very extensive. From the packaging materials used as food and beverages to grease cans, chemical cans, and other cans, the advantages and characteristics of tinplate provide excellent physical and chemical protection of the contents. Tinplate cans meet environmental protection requirements for packaging materials: Existing containers include tin cans, aluminum cans, paper and plastic containers. These containers have different recycling characteristics, but the tin cans are superior to other packaging materials in recycling. . Based on the international environmental management standard ISO-14000, tinplate cans with low pollution, recyclable, and resource-saving characteristics will have broader development space for future packaging applications. https://i.imgur.com/Pcq7gK5.jpg ※Please pay attention to the order! The front material is tinplate metal, and the back surface is soft magnetic material. ※ The surface is a special metal ink printing (Metal Printing), the drawing is a pattern printing, non-ceramic / wood / glass and other materials. Origin / manufacturing methods Made in Taiwan.