Lithium stone casserole is a kind of healthy cooker because of its acid and alkali resistance, lead-free cadmium dissolution, non-toxic and harmless, which meets the national standards. There is no pollution after burning, so it can be used safely. In addition, lithium stone is a main crystal phase ceramic with low linear expansion coefficient and good thermal stability, and does not crack after quenching at 1000℃ in cold water.

Ceramic casseroles generally use inferior soil, which has a rough texture and poor adaptability to temperature difference. When the casserole is suddenly heated and cooled, it will cause rapid expansion or contraction, which is easy to cause rupture.