Kodi mfundo zokhudzana ndi makampani opanga ma polypropylene mu 2021 ndi ziti? Poganizira za momwe mitengo ikuyendera chaka chino, kukwera kwa theka loyamba la chaka kunachokera ku kukwera kawiri kwa mafuta osakonzedwa komanso nyengo yozizira kwambiri ku United States. Mu Marichi, kukwera koyamba kwa ma rebounds kunayambitsidwa. Nthawi yotumizira kunja inayamba ndi izi, ndipo zinthu zapakhomo zinali zochepa. Kuwonjezeka, ndipo kubwezeretsa kwa zinthu zakunja kunachepetsa kukwera kwa polypropylene, ndipo magwiridwe antchito mu kotala lachiwiri anali apakatikati. Mu theka lachiwiri la chaka, kuwongolera kawiri kugwiritsa ntchito mphamvu ndi kugawa mphamvu kwakhala
