Prepare enterprise schedules (Mold Industry)

Production Planning plays a key role in a production-type enterprise. All the work is centered on a production plan. Therefore, the trial release of the planning schedule determines the success or failure of the project.
I have been studying how to control the progress at work today. I always feel that I have to constantly improve the schedule of this production plan, although I used to start every project kick-off meeting, the time was controlled by various departments at the same time, but the results were always unsatisfactory, either because the project was delayed or the procurement was delayed or the production was abnormal, resulting in delays in the entire project. These problems have always plagued me. I always thought that the time given by the person in charge of each link should not differ much from the actual time during each project kickoff meeting, however, from the progress of many projects, my original intention seems naive or immature. I think the biggest problem is that I did not consider the risk factor of the entire project. At first, we made the best possible arrangement of the time. If there was an accident later, we can also have room for maneuver. Another point is to improve the enthusiasm of people who follow up on the link. to solve problems in a timely manner, or to discover problems as soon as possible, we should put the exceptions that are about to emerge in the "Cradle.
The key to a successful project: cost, quality, and time. I think these three are all necessary and indispensable.