From the Wikipedia page 
BOH Plantations Sdn. Bhd. is the largest black tea manufacturer in Malaysia. The BOH Tea Plantation, which is located at Cameron Highlands, Pahang, Malaysia is also the largest tea plantation in Malaysia.
The current slogan of BOH tea products is "BOH ada Ummph!" (BOH has Ummph).
BOH Plantations was founded in 1929 by J.A. Russell, a British businessman during the British colonial era in Malaya. He was optimistic of the tea plantation business due to huge demands despite of the world-wide Great Depression at that time. As a result of the potential, he applied for and was granted a concession of land for his first tea garden in Habu, Cameron Highlands.
Today, BOH Plantations owns three tea gardens - the first garden in Habu, Fairlie Tea Garden and Sungai Palas Tea Garden. To ensure the freshness of its tea products, BOH Plantations also set up a packaging factory near its main garden. BOH tea products are distributed both in domestic and international markets.