Yee On Tea is a Hong Kong-based tea brand and merchant specializing in traditional pu-erh teas, particularly collectible and well-aged varieties that reflect the local Cantonese tea culture. Founded in the early 1900s, the company became known for its role in sourcing, aging, and distributing pu-erh under the distinctive Hong Kong storage style, which relies on controlled humidity, ventilation, and stable temperatures to produce a recognizable maturation profile.