Grade-B (Raw Bird Nest) is a premium quality edible bird's nest for those who want to enjoy its health benefits. An all-natural product with no additives or preservatives. 99% သန့်စင်ပြီးပေါင်းရန်အသင့်ငှက်သိုက်အမြှင်တို Grade B 99% refined, short white-nest fiber