Kūʻai Kūʻai Kiʻekiʻe a me ka hoʻokūkū o ka mea kūʻai uhi uhi kaʻa ʻili maʻamau

ʻO PU, ka inoa piha no ka polyurethane, ua ʻike ʻia hoʻi he ʻili hana, kahi vinyl i kālai ʻia a mālama ʻia e hoʻohālike i ke ʻano o ka ʻili.ʻAʻole hiki i ka ʻili PU ke hoʻomaʻemaʻe wale ʻia me kahi holoi maʻalahi, akā paʻa ka lōʻihi e pale ai i nā ʻōpala, maloʻo a me ka haki.Eia kekahi, loaʻa ia i nā ʻano kala like ʻole, no laila ʻo ka hapa nui o nā uhi kaʻa kaʻa wela i hana ʻia me ka ʻili artificial PU, a ua hana pū ʻia nā uhi kaʻa o Bensen i ka paʻakikī a me ka palupalu, ʻoluʻolu o ka ʻili artificial PU o ke koho. .