1, look at the product packaging: In the cotton era, the product packaging was labeled with 100% cotton, cotton or cotton.
2. Observe the product trademark: every product in the cotton era has a trademark, which will appear on the product in the form of sewing. The trademark will indicate the specifications of the product and the materials used, as well as the cleaning method.
3, combustion method: cotton materials will not have smoke and odor when burning, and the burning speed is also very fast.