Grandma pours food waste into the corresponding openings, and puts plastic bags in other trash cans. While she was operating, the smart trash bin had finished weighing the trash and accumulating points for Grandma's account. Today, she has over 800 points on her account .tethered underwater camera,　　"I suggest that you think carefully. If you think the package is not cost-effective, we can also exchange a lot of cost-effective packages; if you are not satisfied with the service, you can also give us feedback." China Unicom customer service said that if the owner insists on bringing Number transfer, you can bring your identity card to the business hall, and cancel the related business to achieve number transfer.