ʻO PP-R, MT02-500 (MT50) he polypropylene random copolymer kiʻekiʻe i hoʻohana nui ʻia i ka hoʻoheheʻe ʻana. Loaʻa i ka MT50 nā hiʻohiʻona o ke aniani kiʻekiʻe, ke aniani kiʻekiʻe, ke kūpaʻa wela kiʻekiʻe, a me ke kūpaʻa ʻana o ka hoʻoheheʻe ʻia ʻana. Ua hala ka huahana i ka ho'āʻo ʻana i ka meaʻai a me ka lāʻau lapaʻau ma GB 4806.6.