Vials and ampoules have a very narrow diameter, which requires precision labelling using very thin materials for a trouble free labelling.
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Different types of pouches such as spout pouches, standup pouches ( with or without zipper ), or gusseted pouches can store any and all kinds of materials either in bulk quantity or the smallest pack size.
Cassettes come in different configurations such as in multiples of 3,4,6 etc. which requires precision labelling with exact space between two labels.