1. Distinguishing the authenticity of corn fiber tea bags: At present, tea bags on the market are mainly divided into PET non-woven fabrics, nylon fibers and corn fibers (polylactic acid fibers), which are mainly round, square and pyramid in appearance.

2, pull a thousand tricks: this is a more violent method, directly take out the tea bag and tear it hard. Tea bags made of high-quality corn fiber are easy to tear, and the opening will be relatively flat, and no filaments or flocs will float out. The result of tearing the tea bag may be like this. Let's distinguish which is nylon fiber and which is corn fiber.

3. Burning camp: Divide the freshly torn tea bag into two parts, leave the other part for later use, and then find a lighter. If there is no lighter, you can use matches. Burn tea bags with a lighter. If it is a corn fiber tea bag, it will taste fresh and fragrant. If there is a pungent smell, it is definitely not a corn teabag. After burning the corn fiber tea bag, there should be no pungent smell and the rubber block is transparent.

4. Flooding the Seventh Army: Next, take out the half tea bag just prepared and put it in a clean container, preferably a transparent container, so that it is easy to see the changes inside, and then directly pour the boiling water into the container. If the water quality is still relatively clear after soaking, congratulations on buying a high-quality corn fiber tea bag.