The leaves collected at the factories are withered by the passage of air blown through them by axial flow fans.
The tea leaves lose 30% to 45% of moisture when laid out on the withering troughs for 12 to 16 hours.
The leaves then pass through either of two production processes, Orthodox and CTC or cut, tear and curl, depending on the nature of the final product desired.
In the CTC method of manufacture, the withered leaf is fed into a Rotorvane, which crushes the leaf by building pressure in itself.
The crushed leaf is then fed through a bank of CTC machines. During this process, the crushed leaf is first cut into small pieces. Then the cells in the leaf are ruptured and exposed by a tearing effect and finally,cut pieces are curled to give a grainy make of tea.