Japan Plastic Additives Market: By Product Form (Masterbatches, Compounds, Concentrates, Liquid Additives); Additives Type (Plasticizers, Flame Retardants, Impact / Shock Modifiers, Lubricants, Antioxidants, Antibacterial / Antimicrobial Agents, Others); Plastic Type (General Purpose Plastics, Engineering Plastics, High-Performance Plastics); End Use Product Type (Packaging Products, Automotive Components, Electrical & Electronic Products, Construction Materials, Agricultural Films & Products, Consumer Goods, Medical & Healthcare Products, Industrial Applications), Technology (Conventional / Synthetic Additives, Bio-based Additives, Sustainable & Low-VOC Additives); Distribution Chanel, Region—Market Size, Industry Dynamics, Opportunity Analysis and Forecast for 2026–2035