This document provides an overview of 3D printing technology and its implications. It begins with definitions of 3D printing and descriptions of the different types of 3D printing processes and materials. It then discusses the historical development of 3D printing and its applications in various industries like aerospace, automotive, medical and consumer products. The document analyzes the economic, social and environmental implications of 3D printing. It also explores the opportunities and challenges of 3D printing for companies and consumers, and the implications for business models and intellectual property rights. Finally, it provides an overview of the global 3D printing industry market and key players.