Toyota is a member of two types of information on suppliers: First is a monthly production plan which has been determined previously notified to suppliers in the middle of the month before. By using the monthly production plan has been determined in advance, the supplier will determine the date of the following plans:
1. Cycle time of each process
2. Routine operation reorder raw labor allocation in accordance with a cycle time in each process.
3. The number of spare parts and materials to be ordered on the sub suppliers
4. The number of kanban for each sub-suppliers