- Robusta Coffee Temanggung - Central Java Grade A Type : Robusta Coffee Bean Class : Grade A Process : Natural Moisture : Max 13 % Defect : 11 Point - Robusta Coffee Temanggung - Central Java Grade B Type : Robusta Coffee Bean Class : Grade B Process : Natural Moisture : Max 16 % Defect : 12 - 25 Point - Robusta Coffee Temanggung - Central Java Grade C Type : Robusta Coffee Bean Class : Grade C Process : Natural Moisture : Max 16 % Defect : 26 - 44 Point - Robusta Coffee Temanggung - Central Java Grade D Type : Robusta Coffee Bean Class : Grade D Process : Natural Moisture : Max 16 % Defect : 45 - 60 Point