Selecting the material is the most critical factor in determining the product's price point and target audience. For entry-level or sports markets, prioritize TPU (Thermoplastic Polyurethane) or Liquid Silicone due to their shock absorption and sweat resistance. For premium or fashion markets, opt for 316L Stainless Steel, Titanium, or Carbon Fiber to provide a luxury feel and superior durability. If targeting the rugged/outdoor segment, ensure the case uses PC (Polycarbonate) reinforced with tempered glass screen protectors for 360-degree protection.