AD * Chikwama cha nyenyezi chimatanthawuza kachikwama kakang'ono ka polypropylene kamene kamadzadza ndi valavu.Amadziwikanso kuti matumba a valve pansi kapena matumba a PP wovala kapena matumba a valve pansi.Amagwira ntchito mofanana ndi thumba la valve la mapepala a khoma;komabe, gawo limodzi lokha la zinthu limagwiritsidwa ntchito, ndipo palibe zomatira zomwe zimafunikira kusindikiza thumba.Matumba a AD * Star amathanso kupangidwa ndi mapepala kapena zigawo za PE ngati pakufunika.Ndikofunikira kudziwa kuti pali ochepa olowa m'malo kunja uko, matumba a AD * Star amadziwika kwambiri ngati thumba lavavu lapamwamba kwambiri la pp lomwe likupezeka pamsika.

Matumba a AD * Nyenyezi amatha kusindikizidwa pogwiritsa ntchito inki yokhazikika (mwachitsanzo, timagwiritsa ntchito inki yamadzi) ndikusindikiza kalembedwe kapena kuvala ndi zokutira za BOPP (Biaxially-Oriented Polypropylene) kuti zisindikizidwe bwino.

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