Ngolwesibili,I-PVCishintshe kakhulu ngaphakathi kobubanzi obuncane. NgoLwesihlanu olwedlule, idatha yemiholo engeyona eyepulazi yase-US yayingcono kunalokho obekulindelwe, futhi amathemba okunyuka kwenzalo okunamandla kwe-Fed ancipha. Ngesikhathi esifanayo, ukwehla okukhulu kwamanani kawoyela nakho kusekele amanani e-PVC. Ngokombono wezisekelo ze-PVC, ngenxa yokugcinwa okugxile kokufakwa kwe-PVC muva nje, izinga lomthwalo wokusebenza kwemboni lehle laya ezingeni eliphansi, kodwa futhi likhiphe ngokweqile ezinye zezinzuzo ezilethwe umbono wemakethe. Ukukhula kancane kancane, kodwa akukabikho ukuthuthuka okusobala ekwakhiweni okuzayo, futhi ukuvuka kabusha kobhubhane kwezinye izindawo nakho kuphazamise isidingo esizayo. Ukwehla kwamandla okunikezwayo kungase kunciphise umphumela wokwanda okuncane kwesidingo ngaphansi kokuguquka kwesizini engeyona eyesikhathi eside, okunzima ukuyiletha esitokweni. Kodwa-ke, intengo ye-calcium carbide ihlale izinzile, intengo kwezinye izindawo ikhuphuke kancane, futhi ukwesekwa kwezindleko kuqinisiwe. Intengo yamanje yamabhizinisi e-PVC e-calcium carbide igcine ukulahlekelwa, kanti intengo yamanje isesigabeni sokulinganisa esiphansi, kanti ingcindezi yemakethe yesikhathi esifushane ilinganiselwe. Ngokuvamile, ukukhathazeka kokwehla okukhulu kwasekhaya nakwamanye amazwe kuye kwanda, kanti uhlangothi lwesidingo okwamanje alwanele ukuthuthukisa amanani. Kodwa-ke, inzuzo iyonke yezinkampani zangaphandle zezimayini ze-PVC igcina ukulahlekelwa kanti isizini ephezulu ye-"Golden Nine Silver Ten" kulindeleke ukuthi ifinyelele ezingeni eliphezulu esikhathini esifushane. Kusazobonakala ukuthi isidingo singabuyiselwa ngempumelelo yini. Esikhathini esifushane, kulindeleke ukuthi silondoloze umkhuba wokusebenza ebangeni eliphansi futhi siqhubeke nokunaka izinguquko ekufuneni.
Isikhathi sokuthunyelwe: Septhemba-07-2022