Non-inventory items refer to other types of items, such as those that are special ordered or drop-shipped to your customer. To create a new Non-Inventory Part item in QuickBooks Desktop Pro, open the “Item List” window. Then, track what you receive from vendors and what's still on order. An inventory item is a product that is purchased for resale and is tracked in Stock and on the Balance Sheet.
Basic types of inventory:
Raw materials.
Work-in-progress (WIP) inventory.
Finished goods.
Maintenance, repair & operations (MRO) goods.
Packing materials.
Inventory Valuation is the monetary value or financial worth of your closing inventory.
There are 3 popular Inventory Valuation Methods: First in First Out (FIFO), Last In First Out (LIFO) & Weighted Average Cost (WAC).
Choose an inventory valuation method that suits your organization’s financial goals.https://www.forceintellect.com/2020/11/06/inventory-valuation-methods/