How To Read Barcodes So You Know What Country The Products Comes From. HOW TO READ BARCODES With all the food and pet products now coming from China, it is best to make sure you read label at the grocery store, especially when buying food products. Many products no longer show where they were made, they only give where the distributor is located. It is important to read the bar code to track it�s origin. ALWAYS READ THE LABELS ON THE FOODS YOU BUY�NO MATTER WHAT THE FRONT OF THE BOX OR PACKAGE SAYS, TURN IT OVER AND READ THE BACK�CAREFULLY!