ʻO ka uea TW/THW he mea paʻa a paʻa paha, ka mea hoʻoheheʻe keleawe annealed palupalu me ka Polyvinylchloride (PVC).
ʻO ka uea TW ke kū nei i kahi uea thermoplastic, wai-kū ʻole.
ʻO ka uwea THW he thermoplastic, wai-kūpaʻa uea, akā he wela, hōʻike ʻia e ka H ma ka inoa.