KOCHI: Faced with rising wages, shrinking labour force and low prices, plantation major Harrisons MalayalamBSE 4.31 % (HML) has initiated a brand revamp exercise focusing on value-added products to boost sales. The country’s largest rubber producer and a leading tea grower in South India plans to use its 160-yearold tradition to launch an umbrella brand Harrisons Heritage for its specialty products, the majority of which will be in tea.

“While conventional tea is growing at 3% per annum ..