Ọja yii gba eto-alapọ-pupọ, pẹlu iṣẹ idena giga to lagbara.Awọn ohun elo ti arin Layer jẹ bankanje aluminiomu, eyiti o jẹ ẹri-ọrinrin, ẹri-imọlẹ, pẹlu idabobo omi ti o dara, iṣẹ iṣeduro atẹgun.Awọn ohun elo miiran ti o wa ni arin apo jẹ ọra.O ni o ni ga fifẹ agbara, sugbon tun ni o ni ti o dara ooru resistance, tutu resistance, epo resistance ati Organic epo resistance, wọ resistance, o tayọ puncture resistance.