On March 18, 2026, the core points of additive selection and formula design in the field of polymer material molding and processing were released, clarifying that these two links are the key to ensuring processing efficiency and optimizing product performance. Although polymer additives are added in a small amount, they can improve processing technology and enhance material functional properties. Classified by function, they can be divided into processing modification, stabilization and functionalization types, and their selection must follow four principles such as compatibility and durability. Eight major types of additives including plasticizers and lubricants are commonly used in processing, each with its own applicable scenarios and action mechanisms. Formula design must adhere to the principles of practicality, high efficiency and economy, solve the three core problems of component selection, dosage control and compatibility matching, complete the design through three-step optimization of basic, performance and practical formulas, combined with single-factor or multi-factor variable methods. Four expression forms such as weight ratio are suitable for different production and R&D scenarios. The scientific control of both has become an important guarantee for promoting the upgrading of polymer material molding technology, and the development of new additives will also become a new development direction of the industry. For more information, please click: https://www.tiktok.com/@mia_iota/video/7597717976720149782