How to ensure the safety of fireproof glass

[China Glass Net] As a member of safety glass, fire-resistant glass, in addition to some properties of ordinary glass, is gradually favored by people for its ability to retard the spread of fire and heat insulation.

In order to meet the performance requi

Identification and origin of stalked onyx

The first thing that we think of is the South Red Agate, but today we introduce the skein of agate. The name of the snail is related to its shape. The snail is a kind of agate jade wrapped in a ribbon. Let's take a look at the knowledge about skeining agate, an