Chidacho ndi chida chotetezera chomwe chimatenga ndipo chimachepetsa mphamvu yakunja ndikuteteza kutsogolo ndi kumbuyo kwa thupi lagalimoto. Zaka makumi awiri zapitazo, zopukutira ndi kumbuyo kwa magalimoto zinali makamaka zopangidwa ndi zitsulo. Anakhomedwa mu U-Channel Shael ndi makulidwe a zoposa 3mm. Pamwamba panali kuthandizidwa ndi chrome ndi kutsekedwa kapena kuwomberedwa pamodzi ndi njanji yamadzi. Ndi chitukuko cha mafakitale aumagalimoto, galimoto yamgalimoto monga chipangizo chofunikira kwambiri chotetezera lilinso pamsewu watsopano. Magalimoto a Pamasiku Amtsogolo komanso Kubwezeretsanso kuwonjezera pakusunga ntchito yoyamba kutetezedwa, komanso kufunafuna mgwirizano ndi mgwirizano ndi thupi, kufunafuna kopepuka kopepuka. Kuti mukwaniritse izi, mbalame zam'tsogolo ndi zakumbuyo za magalimoto zimapangidwa ndi pulasitiki, kudziwika ngati opumira apulasitiki. Plampu ya pulasitiki imakhala ndi magawo atatu, monga mbale yakunja, zokutira ndi mtengo. Zojambula zakunja ndi buffer zimapangidwa ndi pulasitiki, ndipo mtengowo umapangidwa ndi pepala lozizira lokhala ndi ma 1.5 mm ndipo chimasungidwa mu poove wopangidwa ndi uko; Zinthu zakunja ndi zokumba zimaphatikizidwa ndi mtengo, womwe umaphatikizidwa ndi sitima yapamtunda ndipo imatha kuchotsedwa nthawi iliyonse. Mtundu wamtunduwu umagwiritsa ntchito pulasitiki, makamaka amagwiritsa ntchito mndandanda wa polyester ndi polypropylene mndandanda wa zinthu ziwiri, pogwiritsa ntchito njira youmbika. Kwina komweko kulinso mtundu wa pulasitiki wotchedwa Polycarbon Ester, yolowa mu mawonekedwe a alloy, komanso magwiridwe antchito ambiri, komanso kuchuluka kwa magalimoto. Pulasitiki Bulumper ali ndi mphamvu, kukhwima ndi zokongoletsera, kugundana kwagalimoto kumatha kusewera thupi lagalimoto, kuteteza thupi lagalimoto lakutsogolo, lopangidwa bwino, limakhala gawo lofunikira la mawonekedwe odzikongoletsa.
