It is the minimum order size accepted by a supplier. Generally, this is based on the minimum order the supplier needs in order for the transaction to be profitable for them. Sometimes they may accept smaller orders for a higher price per unit. With most suppliers, the more you order, the greater your discount.

Protecting the Quality of Chinese imports
China is known as the largest manufacturer in the world. The Asian superpower produces billions worth of products every year, accounting for almost a third of global production. Western companies ...