Autolite copper core spark plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together.
Overproduction or overstocking leads to increased inventory and money sitting idle. Inventory means any goods that are being held for any length of time, inside or outside the factory. In the Lean system, inventory is regarded as a symptom of a sick factory.
Inventory items are valuable business assets, whether the inventory consists of products in development, final products or simply raw materials. Business managers seek to control the inventory, so raw materials and products do not expire and become financial waste for the company. While some inventory methods are suited for small businesses, others are ideal for larger business inventories.