| Business Trends This month's Business Trends presents several case studies of non-OEM (original equipment manufacturer) valve components encountered daily in industrial plants and facilities worldwide. These studies show that the use of non-OEM parts has led to breakdowns and inadequate operations that have caused maintenance shutdowns, which can cost operators a substantial amount of money. What is the value of using OEM-manufactured components? What can be the consequences if non-OEM parts are used? This article examines both questions in detail. Overview of an ethylene plant.