How can I identify the cardboard in the shoes?
The bottom layer is made of paper material, but there are many kinds of paper grades, are imported and domestic, in the price of a few dollars to tens of dollars, so some factories to reduce costs, will use some cheap shoes in the floor.
General shoes are a base layer, especially the high heels (this is the same in the bottom layers are superposed together, the middle will place a piece of iron is used for shaping reinforcement, or shoes wear all stepped down)
General shoes are a base layer, especially the high heels (this is the same in the bottom layers are superposed together, the middle will place a piece of iron is used for shaping reinforcement, or shoes wear on the floor, all went down) this layer is made of paper material, the paper is only a there are many kinds of imported and domestic level, the price in a few dollars to tens of dollars, so some factories to reduce costs, will use some cheap shoes in the floor.
