ʻO nā mea e pili ana i nā mea e noʻonoʻo ai i nā mea e pili ana a me kā lākou mau hiʻohiʻona pili:
1.ʻO Plyvinyl chloride (PVC) He kūpono ia no nā wahi ākea.
2.ʻO Poyethylene (Pe)
III. Ua hoʻopiliʻiaʻo Cross-Link
4. Nā Rubber: Ua loaʻa iā ia ka elasticity a me nā pale pale, a kūpono no nā wahi a iʻole nā puka ākea a i waho paha.
V. Silicone Rudber:ʻO keʻano wela, ratistant, radiation-resiant, kūpono no nāʻenehana kūikawā.
