the PX storage capacity should be considered

In addition, if the PTA producers choose to shut the unit out of plan, the PX storage capacity should be considered. After all, the storage capacity of the PTA plant is limited. If the PX contract volume is cancelled now, the possibility of not being able to buy it later also exists. Besides, the arrangement of maintenance personnel and the arrival of some accessories or equipment should also be considered. In addition, PTA plants also faces the problem of downstream contract delivery.