SUMMARY. Sari, et al. research the electrical energy analysis from the heat air conditioner condenser with insulation and a thermoelectric generator, which expected to heat from the labour of the air conditioner condenser and use by converting thermal energy into electrical energy. Suhandono et al. have a goal to develop the application, which can help admin in digital management of in and out mail quickly and easily. Nurjannah, et al., research identifying the user needs of the reclining seat in the station platform to design ergonomic reclining seats in the station and provide comfort and safety for all users. Ajitomo, in his research, the noise level on the drug strip machine in the production process could be reduced, that it can increase engine productivity, reduce rejection on stripping the engine, improving operator service, and increase efficiency in the production process. In research, Rahma et al. conducted a study to evaluate air pollution reduction attributable to cycle optimization at junction signal using a PTV VISSIM application. This research aims to assess the amount of pollution reduction attributable to optimization cycle time at junction signal with a Way Halim Intersection case study, Bandar Lampung. Upara and Destianto research how the EDM die sinking process parameters to material release rate and electrode wear rate aim to obtain optimal parameters in producing quality products. Kurnia and Listanti, in their research, discuss the identification of consumer preferences for red guava chips using the QFD (Quality Function Deployment) method to know the attributes of consumer desires the most influential on consumer preferences when buying red guava crackers. Mulyanto and Supriyono, in their research describing the manufacturing process of a hybrid rotary machine for chilli dryers, which is a practical machine that can process chilli agricultural products more optimally.