The fabric of the suitcase is made of PC+ABS composite material. PC material contributes high toughness and can disperse pressure through deformation when subjected to external impact, quickly rebound and not easily break. ABS material enhances rigid support, provides structural stability, and avoids excessive deformation under extreme pressure. The combined effect of the two is: more resistant to falls than pure ABS, more pressure resistant than pure PC, suitable for violent shipping scenarios.