You can purchase a commercial oven at Hotel Restuarant Supply, amazon.com, buy.com, Restaurant Equipment Supply, and Grainger Industrial Supply. You can may options.
One can purchase a restaurant sized pizza oven from the following sources: Alfa Pizza, Monster Chef, Food Service Warehouse, Traditional Oven, Frono Bravo, US Foods Culinary Equipments and Supplies.
An industrial oven can cost anywhere from $1000 to $10,000. You may even need two of them for your restaurant. Your best best is to shop around to see if you can find a great deal on them.
Once can purchase an Energy Star rated commercial convection oven from a variety of locations. You can contact your local commercial restaurant shopfitters, some large electrical stores or online on Amazon.
Cheap industrial ovens can be purchased through online auctions, garage sales, or through businesses getting rid of old products. You can find these for a cheap price.
There are a number of places where you can find a refrigerator for your restaurant. I would check out sites like Amazon, Sears, and Best Buy. Sometimes Costco also has a good selection.
A wrapping machine can be purchased from several places. Some of these include Global Industrial, Restaurant Supply Pro, Hotel Restaurant Supply, and Food Service Warehouse.
NAICS 333994 applies to Industrial Process Furnace and Oven Manufacturing.
If you are looking to buy locally, look for a warehouse store that specializes in industrial supplies. There are also many trusted sites on the internet that you can purchase your supplies from.
Many large variety stores sell oven microwave. Depending on your size requirements you will find an oen microwave of sufficient size there. If you need larger I would try a commercial version sold at restaurant suppliers.
One can purchase a Diplomat oven from UK White Goods or 3owl. One can also purchase a Diplomat oven from Espares, Amazon, eBay, Ciao, 4ove, and Sears.
Cleaning an industrial oven is very similar to cleaning a regular oven, the only difference is that you need to use industrial strength products. Industrial ovens should be cleaned regularly and turned off before cleaning.