The size of the express order is basically the same, and you need to use a custom paper type; Yunda express order specification is: 230*127mm (mm is millimeter, 1 cm = 10 mm) Express order specification size: the width and height of the express order. What paper do you use? . EMS, Yuantong, Shentong, Zhongtong, Yunda express single specification: 230*127mm. Specification of SF Express Express: 216*139.7mm. DHL express order size: 230*139.7mm, 235*152.4mm. General specifications for international express orders: 241*139.7mm, 241*152.4mm.