Underwear knowledge-what are the original order, the following order, the chasing order and the imitation order?

1. Original order: refers to the genuine original order products produced by manufacturers or brands, which are the most formal and standard products. 2. Documentary: refers to the products that are purchased with unclear purchase channels or through intermediate layers, which have certain risks, but the prices are relatively low. 3. Subsequent orders: refers to the act of adding orders on the basis of the original orders or documentary orders, which belongs to secondary purchases and is generally cheaper. 4. Imitation bill: refers to the cottage products whose appearance is similar to the original products, but whose quality, technology and materials are quite different. It belongs to pirated, fake and shoddy products.