1. Mea hana a mea hāʻawi hoʻonā, haku a hoʻohana i ke kūlana honua ASTM BS EN40 i ka hoʻolālā a me ka hana.
2. Kuʻi pololei, ʻaʻohe leakage kuʻikuʻi, ʻaʻohe nahu maka, ʻili maʻemaʻe me ka haumia ʻole.
3. Ke kaʻina hana hoʻoheheʻe pauda, polyester plastic pauka paʻa paʻa, adhesion ikaika, UV kū'ē. Kiʻiʻoniʻoni mānoanoa ma mua o 10um, ikaika adhesion.
4. ʻenehana hoʻoheheʻe wela wela, nā ʻaoʻao o loko a me waho e ka 75 microns ma luna o ka hoʻomaʻamaʻa anticorrosion coating zinc wela.
5. ʻO ka lawelawe hoʻokahi no nā papahana aupuni: ka hoʻolālā mua, nā palapala manawa, ka papa hana hoʻomalu maikaʻi, alakaʻi ʻenekinia no ka hoʻokomo ʻana.
6. ʻO nā huahana kila waho loea, ikaika ka makani kū'ē, corrosion kū'ē, ola a hiki i 50 makahiki.