Viscosity Index Improvers Market Poised for Steady Growth at $5.4 Billion by 2029, Driven by Olefin Copolymer Demand The global Viscosity Index Improvers (VIIs) market is projected to reach US$5.4 billion by 2029, expanding at a healthy Compound Annual Growth Rate (CAGR) of 3.65% during the forecast period (2024-2029), according to a comprehensive new report by Maximize Market Research....