YONEI is a high-tech enterprise dedicated to the research and development, as well as industrial application, of modified engineering plastics. Positioned strategically as a pioneer in risk-free cost reduction and a reliable supplier for imported material substitution, the company specializes in special modification technologies for core engineering plastics such as PC, PA, PBT, PPO, and PPS. The company has established a full-chain R&D system encompassing formula design, pilot verification, mass production, and application feedback. It has made continuous breakthroughs in key technical directions such as hydrolysis resistance, aging resistance at 85C/85%RH, CTI > 600V, and low VOC. Several of its product performances are comparable to or even superior to international top brands such as SABIC, Covestro, BASF, and DuPont. Some materials have been successfully integrated into the supply chains of mass-produced models from Volkswagen, Volvo, Chery, and other companies.