Manufacturing of PVC pipes

ʻO kahi ʻōnaehana hoʻoheheʻe paipu PVC e like me ke kūlanakauhale “nā aʻa ma lalo o ka honua”, ka lawelawe ʻana i ka wai ua, wai hoʻoheheʻe hale, a me ka wai ʻino ʻoihana. Nā paipu PVC, makemake ʻia ma ka honua holoʻokoʻa no ka wai, hāʻawi i ka hana maikaʻi loa a ala mai kahi…