Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs.
Carrying cost of inventory is often described as a percentage of the inventory value.This percentage could include taxes, employee costs, depreciation, insurance, cost to keep items in storage, opportunity cost, cost of insuring and replacing items, and cost of capital that help produce income for a business.Also referred to as inventory cost.his percentage could include taxes, employee costs, depreciation, insurance, cost to keep items in storage, opportunity cost, cost of insuring and replacing items, and cost of capital that help produce income for a business. Also referred to as inventory cost.
Inventory carrying cost is a ratio which describes the relationship between the cost-of-owning-inventory-per-year and the inventory value. For example, if your inventory carrying cost is 25% and your annual average inventory is $1M, then your annual cost of owning inventory is $250K.The rule of thumb for inventory carrying cost is between 20% and 30%. Inventory carrying cost is different for every business.or example, if your inventory carrying cost is 25% and your annual average inventory is $1M, then your annual cost of owning inventory is $250K. The rule of thumb for inventory carrying cost is between 20% and 30%. Inventory carrying cost is different for every business.