Welcome to the latest issue of the Angolan Industry and Chemical Engineering Journal. In this edition, we are excited to present a diverse range of research papers focusing on various aspects of industry and chemical engineering. The subjects covered in this editorial include proposals for monolithic coefficients for reinforced concrete columns, the study of gas mixture non-ideality, the use of cleaner production tools in plastic waste recycling, and thermodynamic analysis of gas mixtures utilizing Peng-Robinson and Soave-Redlich-Kwong equations of state.