With checking out the moisture content in tea leaves or coffee beans accurately and quickly, 

- To keep the same content of moisture as the market wants in production & dryness. 

- To economize times & expenses in dryness. 

- To prevent deterioration & decay caused by moisture at storage & in trade. 

- To determine the price by quality according to the moisture content in trade. 

- To enhance convenience & efficiency on processing. 

- To choose the tea or coffee to suit end-consumers' tastes.