1, ʻōnaehana resin: ʻO ka pena wai maʻamau i hana ʻia me ka styrene acrylic, ʻo ka ʻōnaehana resin emulsion acrylic maʻemaʻe ka hapa nui o ka ʻāpana hoʻokahi. ʻO nā ʻōnaehana pena wai ʻoihana e komo pū ana me ka alkyd wai, ka epoxy ester wai, ka epoxy wai, ka polyurethane acrylate wai a me nā ʻōnaehana resin i hoʻololi ʻia a me nā hybrid.

2, nā ʻano hana: hōʻike ka pena wai maʻamau i ka manaʻo o ka ʻono maʻemaʻe, ka palekana o ke kaiapuni a pēlā aku. Loaʻa iā ia ke kūpaʻa i ka ʻōpala. Pono nā pena wai ʻoihana i nā waiwai kiʻekiʻe, e like me ka paʻakai paʻakai, ke kūpaʻa i ka hopena, ka hoʻopili ʻana, a pēlā aku. Ma muli o ke kūkulu nui ʻana o ka pena wai ʻoihana, hiki ke hoʻololi ʻia i ka uhi ʻana i ka dip, ka pīpī ma kahi, ka pīpī robot, a pēlā aku, e like me nā ʻāpana hana like ʻole.

3, ʻaʻole like ka hoʻohana ʻana: pena wai maʻamau no nā paia o waho o ke kūkulu ʻana, ka lāʻau, ka hao a me nā pena ʻē aʻe. Hoʻohana ʻia ka pena ʻoihana wai no ka pale ʻana i ka palaho o ke kila, ka ipu, ke alahaka, a me nā mea hana mīkini.