The enamel trays are used for heat-based cooking (convection, oven, broil) in the Advantium. You can either place food right on it to cook and brown, or place a glass baking dish on it. You can not use the enamel tray for microwaving.
In 1999 GE launched its Advantium oven, which could cook food four times faster than conventional ovens and could also function as a microwave oven. It used halogen lights to cook the food from both sides at the same time
A French oven is a type of pot made of enamel mostly and is used for braised meat while the American oven is a typical heated box to bake meals completely.
Durastone II enamel is made of substances of clay particles of teflon. (DeLonghi Customer Service). Ovens made ​​from this material do not exceed 220 degrees (Celsius) and I think this says a lot about the dangers of Teflon (which at higher temperatures begins to be dangerous). However, this is just my deduction. See: http://en.wikipedia.org/wiki/Polytetrafluoroethylene (safety section)
Plastic trays used for eating are commonly called simply "trays." Sometimes, however, plastic food trays are referred to as "plates" or "pizza plates."
They are trays used to present food on in a buffet style meal
Please place the used meal trays on the trash bins.
fluoride
Industrial ovens can be bought online from websites such as ESPEC, Furnace Brokers, Peerless Ovens, LRE, and Wisoven. Used industrial ovens are sold on the Used Furnaces website.
Iron can be found in the form of steel (an alloy of different matals, the main one being iron) which is used in the framework of bridges, buildings, the bodies of ships and cutlery. Other places where iron can be found (cast iron) is kitchen utensells, such as pans, ovens and trays.
cooking , baking
The ovens in the holocaust were used to burn the corpses of those who were killed in concentration camps.
Decorative trays are used to add something decorative to a room. They might be used to display other objects such as crystal glasses or ornaments but mostly they are just used for decoration.