Affect the transparency of plastic bags, feel a special kind of material "crystal."

Crystal-type openings due to different sources, divided into "heavy" and "light" two categories. Heavy crystal refers to the natural mineral opening agent. Light crystals are those that are chemically synthesized. The difference is that, in the same volume, the weight of a significant difference. Or in the case of the same weight, there is a significant difference in the total number of effective particles of the opening agent. Light opening agent, in the case of the same weight, because the opening agent particles than the total amount of heavy opening agent is much more efficient than the heavy opening agent. So the amount can be reduced, so that the total transmittance of direct light is improved, the transparency of plastic bags has also been further improved.