Birthstone Stud Earrings,Birthday Earrings,Birthstone Earrings JOYA GIFT CO.,LIMITED , http://www.joyagifts.com The newspaper in Montreal, Canada, recently developed a self-adhesive sealing paper for use in food, daily necessities, pharmaceuticals, and other packaging that can reduce the hassle of using cords for packaging. According to reports, the outer layer of this sealed paper is kraft paper, which can be used for writing and printing. The inner layer is a special polypropylene foam material. It is tough, non-toxic, and has the functions of heat preservation, moisture retention, etc. vent. Once it is unsealed, it loses its adhesiveness and the sealing paper also has a certain anti-counterfeiting function. (Pan Lin)