Many people sourcing from a wholesale ceramic dinnerware supplier often ask about microwave safety. So if you're buying in bulk, make sure to test a sample first, especially for commercial or restaurant use. If you doubt, try placing a plate above a cup of water in the microwave for about half a minute. Microwaving a plate won’t work if the plate gets hotter than the water. https://sparkarticles.com/is-ceramic-dinnerware-safe-for-microwave-and-dishwasher/