This book covers three distinct areas of technological research. The first chapter, "Deposition of Titanium Nitride Thin Films by Plasma Nitriding on Glass Samples Using a Cathodic Cage", explores the application of plasma nitriding with a cathodic cage to deposit titanium nitride thin films on glass surfaces.The second chapter, "Thermal Load Study for Air Conditioning Design of a Motorcycle Parts Store Using BIM Software", focuses on energy efficiency and the design of air conditioning systems. Using Building Information Modeling (BIM), the authors carry out a detailed thermal load study to optimize the air conditioning design of a motorcycle parts store.In the third chapter, "Proposal for Automating the Identification of Welded Joints in Pipe and Profile Production Lines with Computer Vision and Raspberry Pi/OpenCV", the authors present a practical proposal for automating the identification of welded joints. They suggest using computer vision, Raspberry Pi and OpenCV to improve the detection of welded joints in industrial production lines.