Brush bird's nest with glue;

The unpolished bird's nest feels obviously rough, while the unpolished bird's nest generally looks shiny. Here, I want to make it clear that there are no gaps and no brushing. Nowadays, more and more counterfeiters still brush the pulp, but they will deliberately leave a gap. In the process of bird's nest processing, the master's final shaping method is different. Some masters like to widen the swallow cup to make it wider, and some masters will add a plastic process to squeeze the bird's nest tighter, so that the gift box will be more beautiful.

Bleached bird's nest:

The nest is either white or floating. It is necessary to carefully compare whether there is color difference between the swallow cups of a batch of bird's nest and whether there is color difference in different places on a swallow cup. The key depends on whether the sulfur dioxide test results on the bird's nest test report exceed the standard (bleach contains sulfur dioxide). Chemicals used to bleach bird's nest will bleach bird's nest and dissolve the tiny hairs inside. Hand-picked bird's nest often has a little more impurities.