The enterprise with the factory registration number of 00 1 represents the first batch of enterprises in Indonesian bird's nest industry that have been allowed to import into China. That is to say, the bird's nest manufacturer of 00 1 factory has a longer history, is safer and has a larger scale, so there are not many fakes.

Bird's Nest refers to a nest made of saliva secreted by some Swifts of Swift Family of Swift Order and several Jin Siyan species of Swift genus, and then mixed with other substances.