Physical and mechanical performance requirements: No. Item index 1 Density (g/㎝3) 1.17±0.03 2 Tensile yield strength (MPa) ≥35 3 Bending strength (MPa) ≥55 4 Bending modulus (MPa) ≥2200 5 Simply supported beam Notched impact strength (kJ/㎡) ≥10 Izod notched impact strength (kJ/㎡) 6 Melt flow rate (g/10min, 220℃/5kg) ≥5 7 Heat distortion temperature (℃) ≥80 Note 1: Notch If the impact strength meets any standard, it is considered qualified. Combustion performance: The combustion performance of flame-retardant ABS material should at least meet the V-0 standard (thickness: 3.0mm).