7-eleven is checked for quality and quantity. The product distribution is that there is very little. I should have a decent amount of goods sold to customers who use the service.
7-eleven monitoring the quality of the products and quantities. That type of distribution that contained much because the vending goods should have an appropriate quantity per customer service.
7-eleven is the quality of the products and the sales volume of products that are available, how much they should have sold the goods to the appropriate amount of customers.