Xiuyan Jade Mattress in Liaoning Province is made of jade produced in Xiuyan, Liaoning Province. This kind of mattress is advertised as having certain health care function. It is said that long-term use of jade mattress can promote blood circulation, relieve fatigue, improve sleep quality and enhance immunity.
However, these effects have not been certified by authoritative departments or legally recognized institutions. When buying such products, it is still necessary to verify their efficacy.