Quality control: Five fold guarantee from raw materials to finished products Standardization of production process Introduce CNC numerical control equipment for sheet cutting, with an error controlled within ± 0.5mm. The bonding process uses corn starch adhesive, which is cured by cold pressing for 72 hours to ensure the strength of the connection. Finished product testing system Load bearing test: Simulate a static pressure of 160 kilograms for 24 hours without deformation or cracking. Appearance inspection: Use a colorimeter to check the uniformity of the paint surface, ensuring no defects such as sagging or bubbles.