Low delivery time: PPE required for production, due to the uncertainty of the project, the length of time will lead to untimely delivery, thus affecting production
2. High stocking amount: PPE is used in large quantity, and one stocking is used for about 2~3 months, and the large stocking of fasteners also occupies a lot of warehouse area and affects the stocking of other materials.
3. Work order receiving material: Due to the need of the project, all the PPE received need to be matched to the work order number, which is used to account for the production cost
4. Management cost: The PPE collection goes through a series of processes such as mentioning the plan, purchase order, incoming quality inspection, on the shelf, outgoing distribution to the work station, and employee sign-off, which seriously affects the use of fasteners