A company's ability to innovate is challenged every day. It must constantly accelerate the time-to-market for its products in the face of unbridled global competition, all starting with an initial design and research stage. At this stage, the entrepreneur needs to know, as early as possible, the product's level of acceptability on the market, as well as its profitability. They must also comply with current health and environmental regulations and anticipate potential hazards. The entrepreneur also needs to swiftly assess technical and economic factors, such as the cost price of the new product, its profit margin, the amount of the investment and the time required for implementation. This collective work by the SECF (Société des Experts Chimistes de France) is aimed at process developers, whether industrial or academic, students or anyone interested in industrial and societal issues relating to products. Technical and Economical Evaluation of Products at the Early Development Stage is divided into three independent parts: eco-chemistry for sustainable products, toxicology and ecotoxicology, and product industrialization.