As the name implies, diamond tea bag is just like diamond, with tetrahedral structure, using food grade nylon for packaging. This kind of tea bag looks exquisite and clear, and the inside space of the bag is very large, conducive to the fragrance, but also can appreciate the shape of tea changes, is the mainstream trend of tea bag in the future. But diamond tea bags are expensive to process and few factories can produce them. So it's mostly used in higher-end products. Domestic 7talks all use diamond tea bags.
