Film coating: Spray one thin protection layer on the surface of tablet ( used in aqueous or organic solvent ). ? Enteric coating: Spray one protection layer on the surface of tablet to against
stomach acid. ? Sugar coating: Multi-layers of sugar coated to protect the tablet. Hot airflow pass through a special designed film, heat the uniform rolling tablets inside, spray solution downward
on the rolling tablet through pump and spray gun to get coating and drying purpose.