1. Movable hand trucks, carts for stair climbing, folding shopping carts, collapsible port shopping carts, luggage carts with reinforced seats, collapsible carts with stair climbing function. 2. It includes various types of carts such as hand trucks, stair climbing chairs, shopping carts that can be folded, collapsible port shopping carts, and luggage carts with an enhanced seat. 3. There are movable hand trucks, carts for ascending stairs, foldable shopping carts, collapsible port shopping carts, luggage carts with a strengthened seat, and collapsible carts with stair climbing capabilities. 4. It features hand trucks that can be moved, carts for climbing stairs, folding shopping carts, collapsible port shopping carts, luggage carts with a reinforced seat, and collapsible carts with stair climbing function. 5. Consists of movable hand trucks, stair climbing carts, foldable shopping carts, collapsible port shopping carts, luggage carts with an improved seat, and collapsible carts with stair climbing features.