The development of paper cups and our advantages In 1932, the first wax-coated two-piece paper cups were introduced, whose smooth surface could be printed with a variety of beautiful patterns to enhance the promotional effect. The wax coating of the cups prevented direct contact between the beverage and the paper material and protected the adhesive, enhancing the durability of the cups; on the other hand, it increased the thickness of the sidewalls, making the cups much stronger, thus reducing the amount of paper necessary to make stronger cups and reducing production costs. The paper cup made by our paper cup machine is of high quality.