Stainless Steel Food Containers - Oven-proof

We are interested in Stainless Steel Food Containers that can be placed in the freezer or refrigerator and then used in the oven. The containers will need to be heat proof up to 650 - 700 degrees Fahrenheit.

The containers will need lids that are spill tight and leak proof for transportation.

The lids will need some type of mechanism that allows the food inside to be heated without the containers exploding from the increased pressure when being placed in the oven.

We are also interested in thermal cold pack bags to carry the containers for delivery to customers. The bags need to hold the containers and maintain a 35-40 degree Fahrenheit for a period of 2 to 4 hours.