tube iṣupọ HDPE jẹ iru tuntun ti apo aabo okun USB, eyiti o dapọ awọn iha-iho 7-iho 25/21 ni ọna kan.Ipilẹ ita ti o wa ninu apofẹlẹfẹlẹfẹlẹfẹfẹ polyethylene giga 3.0mm, eyiti o le gba ni aaye to lopin.Diẹ tube iho ati aabo ti iha-tube.