ʻO PP-R, MT05-400L (RP340R) kahi copolymer polypropylene random me ka wai maikaʻi, hoʻohana nui ʻia i ka hoʻoheheʻe ʻana i ka injection. Loaʻa iā RP340R nā ʻano o ka transparency kiʻekiʻe, ka ʻōlinolino kiʻekiʻe, ke kūpaʻa wela kiʻekiʻe, a me ke kūpaʻa maikaʻi o ka ana injection. Ua hala ka huahana i ka hoʻāʻo lapaʻau YY/T0242-2007 a me ka hoʻāʻo ʻana i ka meaʻai a me ka lāʻau lapaʻau GB 4806.6-2016.