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With the development of society, empty-nest elderly are often faced with the problem of going shopping alone. However, when facing with stairs and other obstacles , the elderly need to spend more effort to push the normal shopping cart go through those obstacles .This kind of tire uses the combination structure of two wheels and tracks, which is different from the common luggage wheels. Our new shopping cart with Tank Link Tire can help the elderly overcome any obstacle and let them have a good shopping trip.