A combination bag that is transparent on one side and opaque on the other is called a yin-yang bag. In the market, the common structure is the combination of electroplated aluminum foil with transparent film or paper with transparent film. This is limited to being used in standing (zipper) bags. Our company developed a combination of real aluminum foil with transparent film or paper with transparent film, which can be used in flat bottom (pocket zipper) bags. All Packing is the only company in Taiwan to make special Yin-Yang bags.
