First of all, the landlord should understand what the magnifying glass is for, which is nothing more than looking at the surface of the jade body, the internal structure of the jade body and the flaws. 10 times these requirements can be met, and the greatest significance is not great.

For example, looking at the fiber structure and crystal arrangement of jade articles is not something that ordinary magnifying glasses can do, and needs to be observed under a microscope.

Portable and practical, it is the characteristic of 10 times magnifying glass.