Core Viewpoint - The plastic semi-finished products market in the United States is projected to reach $7.191 billion by 2031, with a compound annual growth rate (CAGR) of 4.9% in the coming years [2]. Group 1: Market Overview - Plastic semi-finished products, also known as plastic blanks, are intermediate plastic materials that require further processing to become finished products, produced through methods such as extrusion, molding, or casting [1]. - The automotive sector shows significant demand for high-strength lightweight materials, primarily using reinforced nylon and polyoxymethylene (POM) for components like gears and bearings [1]. - The electrical and electronics industry relies heavily on precision plastic profiles, with polyphenylene sulfide (PPS) and polyether ether ketone (PEEK) being widely used due to their excellent dielectric properties and heat resistance [1]. - The construction sector is gradually replacing traditional materials with durable plastic sheets and profiles made from PVC, polycarbonate, and high-density polyethylene (HDPE) for applications such as windows and pipes [1]. - The mechanical engineering field extensively uses ultra-high molecular weight polyethylene (UHMW-PE) and acetal for prototyping and low-friction components, demonstrating superior performance compared to metals [1]. Group 2: Industry Segmentation - The medical health industry is a high-value segment for plastic profiles, with stringent requirements for medical-grade materials, driving innovation in biocompatible formulations [2]. - The aerospace sector requires ultra-high-performance plastic profiles that meet FAA and MIL-SPEC standards for flame-retardant lightweight composites used in cabin interiors and structural components [2]. - The current leading product type is sheets and blocks, accounting for approximately 35.1% of the market share [7]. - The automotive sector is the primary demand source, representing about 22.3% of the market share [9]. Group 3: Key Players - Major manufacturers in the U.S. plastic semi-finished products market include Röchling, Mitsubishi Chemical, POLYVANTIS, BASF, SIMONA, and others, with the top ten companies holding approximately 21.0% of the market share in 2024 [5].