Nano composite packaging material (below)

Third, the main characteristics Polymer-silicate nanocomposites have excellent strong waste, stiffness, and barrier properties, in addition, compared with the commonly used filler-type reinforced polymer, the former contains a much smaller amount of filler. In rei

Must-read fragrances are not perfect

As the weather began to heat up, more and more people began to use perfumes to create a fresh fragrance. At the same time, with the improvement of people's sense of beautifying life and the continuous improvement of perfume manufacturing technology, people