topic is Apple incorporation

what are the operational events (not the technological events) Over the Past Five years have been occured that are related operations management ,mention few huge occasions that occurred in Apple's most recent five years of activity, from 2016 to 2020 and also include the following topic in this which is related to apple:

Explain about the product structure for apple ,

tell about the bill of material.

Tell about the gross requirement plan and a material

requirement plan, and the role of ERP

compute a reorder point and explain safety stock related to apple ,

and then explain and use cycle counting,

explain and use the E0Q model for independent

inventory demand for apple company , and

explain and use the quantity discount model.

explain the strategic importance of the supply

chain in apple ,

identify six supply chain strategies and what and did apple used the strategies,

explain issues and opportunities in the supply chain of apple ,

use a decision tree to determine the best number of

suppliers to manage the risk of disaster, and

explain and measure the bullwhip effect.