strip carton ultrahard strip paper box slender paper box folding umbrella carton strip carton express box

10*10 * 35cm 7.5*7.5 * 27cm 7.5*7.5 * 33cm 10*10 * 30cm 7.5*7.5 * 38cm 6.5*6.5 * 25cm 6.5*6.5 * 28cm 6.5*6.5 * 31cm 15*15 * 40cm 10*10 * 42cm 13*13 * 48cm 12*12 * 35cm 12*12 * 30cm 12*12 * 25cm

three-layer b- watt hard three-layer hardened b corrugated