Where can I buy condensed crystals?

The extracted crystals can be obtained in the following places:

1. Drugstores and medical supplies stores: Some large pharmacies and medical supplies stores will sell gel products. You can go to the local drugstore to find related products.

2. Physical supermarkets and grocery stores: Some supermarkets and grocery stores may also sell gel products, especially gels used for food production or cooking.

3. Online shopping platform: You can search and buy gel products on various online shopping platforms. Some common online shopping websites include Amazon, Taobao and JD.COM.