| 摘要 |
<p>A kind of versatile and healthy jade product (1) is made of jade and suitable for the form of the human body such as back cushion of cervical vertebra, insole or cushion and so on. In the inner of the product there is a room (2) in which there is a refrigerating material (3) to cool down the jade. Dryice or ordinary ice can be used as the said refrigerating material, and an electronic refrigerating element can be used.</p> |
