Thermoforming for industrial and retail packaging applications continues to grow. American Built Containment Systems specializes in both thin gauge and heavy gauge thermoforming trays. This paper highlights on the nine tips about thermoformed trays like providing the actual product that needs to be packaged to your supplier when designing the heavy gauge thermoformed trays, assess if the actual product can be stacked upon and support weight, design trays that are stackable, have the trays marked with a stripe these stripes help your operators know when the trays are loaded or empty saving in labor costs and storage efficiency, have the sketches with overall dimensions of your trays before proceeding with a production order, make a production tool instead of a wood prototype tool, evaluate different thicknesses of plastic and mark your trays with an identification stamp this will help assure that they are returned to the correct address.