Profile: Dordan Mfg., Inc. is a manufacturer of custom thermoformed clamshells. Our products include clamshell, blister & bi-fold packaging, thermoformed trays and thermoformed components. Our clamshell packaging is composed of two clear thermoformed halves that fold together on a hingeā_"securely enveloping and protect the product. Our thermoformed display trays are designed to hold and showcase a wide array of retail products such as cosmetics, toys & entertainment items.