1461022274-b9d8a469-28e6-4ac6-9c9f-ab5006f14667

The present invention relates to the use of a high intensity, in-line rotor-stator apparatus to produce fine particles via antisolvent, reactive, salting out or rapid cooling precipitation and crystallization. According to the present invention, a compound stable in thin film state and suitable as a host compound for an emission layer of an organic electroluminescence device or as a hole transporting material can be provided. At least one destination call control is installed.