Tupperware is made to resist the abuses received when subjected to the heat of the microwave and then immediately thereafter, the cold of a freezer. The products, bowls and containers produced by the company are built with the materials to withstand those types of extremes. They do not warp, melt, crust, or stain with use. Most are not breakable and have a life of many years and sometimes decades.
Most of their products are accompanied by a lifetime warranty against cracking, peeling, chipping, and breaking. The warranty guarantees a replacement will be issued if you discover any of these defects in any of their products. If not an exact replacement, then a refund, or a reasonable facsimile will be sent in exchange.
Tupperware is headquartered in Orlando, Florida and it is produced worldwide from the United States, Philippines, China, Belgium, and many more.