Currently working for the occupation was a major factor in the lives of our people, especially those who have to work with labor and work in a factory or industry does not leave even simple tasks like handling and moving materials. gently and do on a regular basis. You have to invent tools that enable more energy-saving and labor used to facilitate the lifting large and heavy. And put to use in everyday life
, so developers have invented tools called Cart purpose. Which developed from a wheelchair, but it was more convenient to those actually used by the trolley can move up the ladder with wheel design with three children on one side of the gear together. It also has extra wheels that can roll out the area behind the wheel has only one wheel on one side to help placing the flat price. The handle of a shopping cart, it can be flexible if the price is much higher than the original amount will be stretched to catch up, too. Finally, the base of the stroller can be folded out to the store and moved in a narrow space.
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