Product name: cast glass Brand: KINTO Importing country: Japan Place of Origin: Mainland China Material: heat -resistant glass Packing: a single PP bag packaging Usage: Dishwasher and microwave safe (stainless steel dishes cannot be placed in the microwave), please do not boil and do not freeze or heat quickly. Warm reminder: Handmade glass may have bubble circles, etc. This is normal. Please do not take pictures if you mind.