... 3.Water proof, puncture resistance 4.Mailer with back puch,custom size Products: Poly mailer envelope with back pouchOur company is ... advanced blowing film machines, printing machines, bag making lines and other auxiliary equipment. The performance of our equipment is ... waybill.SubjectDetailsMaterialLDPE or HDPE co-extrusion material, outside-white and inside-grey color, printing on outside, 0.035-0 ...