He nui nā waiwai maikaʻi o nā poloka polyurethane buffer, me ka ikaika mechanical kiʻekiʻe, ka insulation maikaʻi, ka pahū-hōʻoia, ka pale ʻana i ka corrosion, ke kūpaʻa wela, ke kū anuanu, ka pale ʻana i ka aila a me ke kūpaʻa ʻelemakule.Ke hoʻohālikelike ʻia me ke ʻano rubber-type, spring-type a hydraulic-type buffers i hoʻohana ʻia i kēia manawa ma ko mākou ʻāina, ʻaʻole i loaʻa wale i nā buffer polyurethane ka hana buffer ʻoi aku ka maikaʻi loa, akā he liʻiliʻi liʻiliʻi liʻiliʻi, ke ʻano maʻalahi, ke kumukūʻai haʻahaʻa, a me ka maʻalahi o ka hoʻonohonoho ʻana a me ka mālama.