Ko nga kaiurutau ST kei roto he polymer, he konganuku ranei o waho o te tinana me te huinga o roto kua whakauruhia ki te tikanga whakatika tika.Tirohia te hoahoa i runga ake nei mo nga korero ahu.Ko enei taapiri he mea hanga tika, he mea hanga ki nga whakaritenga e hiahiatia ana.Ko te whakakotahitanga o te karekau tirohanga parahi / phoshphor parahi me te polymer hangai me te whare whakarewa tika e rite ana te mahi miihini me te mahi whatu mo te wa roa.