Birch is a product series of JIANYU, which provides a "High-strength" solution for 3D printing filaments. It has excellent mechanical properties and print quality, and exhibits great tensile strength and durability, making it suitable for long-term stress scenarios. It is a PA12-based reinforced material with high rigidity and toughness, excellent creep resistance, and low water absorption. Parts printed using this material have high strength, abrasion resistance, low warping, low moisture absorption, outstanding toughness and fatigue resistance, etc. It can maintain effective mechanical properties and dimensional stability when used in long-term working environments. It can be widely used in mechanical engineering, electronics and electrical appliances, automobile manufacturing, aerospace, and other fields.