Ua kapa ʻia ʻo Pu puni kāʻei "ʻO" kāʻei puni a pili i ke kāʻei puni, No kēia manawa, ua hoʻololi ʻo ia i ke aniani fiber thermal insulation material, lāʻau a me nā huahana kuʻuna a ua hoʻohana nui ʻia.ʻO kā mākou nui mai 2mm a 30mm.
Pu V- kāʻei ʻO kā mākou kāʻei V- kāʻei Y,M,Z,AD vee kāʻei, HF/HP/HPF/ a i ʻole hana e like me ke noi a ka mea kūʻai aku.Loaʻa i ka nani o ka ʻili maikaʻi, ʻoi aku ka maikaʻi o ka ʻelemakule.