Welina mai i nā huahana ʻupena Aopoly.Me ka ʻoi aku o 60 mau makahiki o ka ʻike ʻana i ka ʻupena hui me ka hoʻonohonoho piha o nā mea hana a me nā kaʻina hana mai ke kaha kiʻi, wili, ulana ʻana, hana ʻana a hiki i ka hui ʻana, hana ʻia nā ʻano ʻupena like ʻole me ka nylon ikaika kiʻekiʻe, PE, PP a me UHMWPE no ke kūkulu ʻana i ka pale ʻupena. kokoke i nā noi e like me ka lawaiʻa, nā mea hana, nā hīnaʻi acquaculture no ka mahiʻai iʻa a me ka lawaiʻa ʻana, ka mahiʻai, ka ʻupena manu, ka ulu ʻana o ka mahiʻai, ka ʻupena haʻuki, ka ʻupena palekana etc.