Zvinofungidzirwa kuti huwandu hwezvinhu zvinoramba kusimba pasi rose hwasvika pa45×106t pagore, uye hwaramba huchikwira gore negore.
Indasitiri yesimbi ichiri musika mukuru wezvinhu zvinoramba kushandiswa, ichidya inenge 71% yezvinobuda pagore zvinoramba kushandiswa. Mumakore gumi nemashanu apfuura, kugadzirwa kwesimbi isina kucheneswa pasi rose kwakapetwa kaviri, kusvika pa1,623×106t muna 2015, iyo inenge 50% inogadzirwa muChina. Mumakore mashoma anotevera, kukura kwesimende, zvicherwa nezvimwe zvigadzirwa zvezvicherwa kuchawedzera kukura uku, uye kuwedzera kwezvinhu zvinoramba kushandiswa zvinoshandiswa mukugadzira zvigadzirwa zvesimbi nezvisiri zvesimbi kuchachengetedza kukura kwemusika. Kune rumwe rutivi, kushandiswa kwezvinhu zvinoramba kushandiswa munzvimbo dzese kuri kuramba kuchiderera. Kubva kuma1970 ekupedzisira, kushandiswa kwekabhoni kwave chinhu chinonyanya kutariswa. Zvidhinha zvisina kupiswa zvine kabhoni zvave zvichishandiswa zvakanyanya mumidziyo yekugadzira simbi nesimbi kuderedza kushandiswa kwezvinhu zvinoramba kushandiswa. Panguva imwe chete, Castables isina simende yakatanga kutsiva zvidhinha zvakawanda zvinoramba kushandiswa zvisina kabhoni. Zvinhu zvisina kuumbwa zvinoramba kushandiswa, zvakaita sezvishandiso zvinokandwa nezvinhu zvinopinza, hazvisi zvekuvandudza zvinhu pachazvo chete, asiwo kuvandudza nzira yekuvaka. Kana tichienzanisa nejira risina kuumbwa rinogumbura rechigadzirwa chakaita sechinogadzirwa, kugadzirwa kwacho kunokurumidza uye nguva yekudzima kwechitofu inoderedzwa. Zvinogona kuderedza mari zvakanyanya.
Zvinhu zvisina kuumbwa zvinoumba 50% yemusika wepasi rose, kunyanya mikana yekukura kwezvigadzirwa zvinogadzirwa nesimbi uye zvigadzirwa zve preforms. MuJapan, senzira yekutungamira kune mafambiro epasi rose, zvinhu zvisingachinji zvakatove zvakaita 70% yehuwandu hwezvinhu zvisingachinji muna 2012, uye mugove wavo wemusika wakaramba uchikwira.
Nguva yekutumira: Chikumi-06-2024