Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
How to identify lead -free glass
1. Look at the logo: Lead -free glass is generally potassium containing potassium, mostly high -end crafts and logo on the outer packaging; lead -containing glass contains lead, that is, the common crystal glassware on some supermarkets and stalls. The content can reach 24%.
2. Look at the color: Lead -free glass has a better foldability than traditional lead crystal glass, and more perfectly shows the folding performance of metal glass; Made of lead glass.
3. Seeing heat resistance: The glass can generally resist very high temperature, but generally poor cold and cold performance. Lead -free crystal glass is a glass with a high -expansion coefficient. The resistance to extremely cold and cold is a bit worse. If you use boiling water to make tea with boiling water in particularly cold, it is easy to burst.
4. Emphasis: Lead -containing crystal glass products are slightly heavy compared to lead -free crystal glass products.
5. Listen to the sound: Beyond the metallic sound of the lead crystal glass, the sound of lead -free glass is more pleasant, and it is rich in the reputation of the "music" cup.
6. Look at toughness: Lead -free glass is more tough than lead crystal glass, that is, impact resistance.
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