① Miss Wang goes shopping in the store. She wants to buy a box of milk today. Then she finds something different. There is a QR code on the milk box. Miss Wang scans it with her phone. Then she finds a lot of things about the milk.
② The QR code is an important part of the food tracking system(食品追溯系统). People in Zhejiang can find a QR code on some food. When they scan it with their phones, they can know lots of things about the food, like its name, where and when it is made, who makes it. If the food is bad, the system will tell people not to buy it and call it back to food stores quickly. If you take the food home, the system will tell you where to exchange(调换) it.
③ The system works from March 15, 2023. Now, a lot of food stores use it to make sure their food is good.They want people in Zhejiang to live a healthy life."I know this kind of QR code is populareverywhere in some countries.I'm very happy to see it in China,"Miss Wang says.