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Our wallets need to be purified because there are lots of viruses in them.Purified Card is made of paper, which can adsorb dirty and disinfect wallet. As time goes on, the card would turn white into green, then yellow, and finally red. Now you need to change a new Purified Card into your wallet.As you see, the card color is determined by the pollutant in wallet. It is a visual process to purify wallet.We can take the card easily and observe purifying process conveniently due to its finger position.
Tianjin Polytechnic University
Tianjin city, China
Touch Industrial Design Co.,Ltd
Foshan City, Guangdong Provice, China