[Tempe aparoduction Bussiness Group] When the outdoor condition is very cold, they use a room to process the fermentation. The humidity and temperature of the room is undefined because there is no device to control the temperature of this room.

[Research Institute for Tea and Cinchona] Humidity is one of the main concerns in drying tea. The right humidity that good for the tea is around 60-70% with the temperature around 25 Celsius to 27 Celsius. (using hot blower that can be maintain using IoT)