2. The surface of the glue-treated fake bird's nest is smooth, and the fibers are adhered. When placed in the sun or light, there will be slight reflection, and the bird's nest is thick.
3. Hand-picked bird's nest is completely soaked in water before picking hair, and then put on the mold to dry, leaving no traces on the swallows.
4. Some fake bird's nest will be cup-shaped with tweezers when making, and there may be pinch marks on the edge of bird's nest.
5. Pure bird's nest has no strong smell. If the bird's nest has a special smell, it is a fake bird's nest, which has a fishy or greasy smell.
6. Take a small piece of bird's nest and soak it in water. When it's soft, bring the silk and pull it. Poor elasticity. A pull is a fake bird's nest.
7. Rub with your fingers. It is also a fake bird's nest that is inelastic and can be kneaded into a paste.