iziphasi ezithunyelwe ngendlwandle ezintathu
Ipholishi ezinembumba yezinyathelo eziphathu zibonakala njengendlela entsha yokupaki kubonakalisa ukusebenza, ubunzima, nokubonakala kwembono emisebenzini yokupakisha. Lezi ziphulaphulaphula ezintsha zinezinyathelo ezithile ezimbumbene ngokwesithothi lapho izinyathelo ezintathu zepholishi zihlaziywa ngokwesithothi, zishiyela isinyathelo sesibili singenamkhawulo ukuze kufakwe izinto kuqala kabusha. Ipholishi enembumba yezinyathelo eziphathu iyenzelwe ngezici ezivuthayo zokugcina okukhuselekile ukulungiswa kwebhola, oksijini, valile, nezinye izinhloso zangaphakathi azikwenzako ukulahlekelwa kwebhola. Izici zomlando wepholishi enembumba yezinyathelo eziphathu ziqukethe izigaba eziningi zezimvumo ezingasetshenziswa ngamathambo amaningi njengepolyethylene, polypropylene, ifoyili yesilvere, nezimvumo ezithile. Lezi pholishi zisetshenzisa umlando wokuhlaziywa ngokwesithothi owaziwayo okwenza izihlazo ezizimeleyo, ezingavulwa khona, ekusisweni kwebhola ngabude beqondini lokulethwa. Indlela yokwenza ibeka amandla ekuchitheni okuningi kanye nesikhathazo, izimo zomthamo, ukuprinta, nezici ezithile njengezinkomba zokuvula, amakhanda okuhlanganisa, noma izihlaza ezifaka kabusha. Isisekelo sepholishi enembumba yezinyathelo eziphathu siphakanyiswa kumazwe amaningi njengebhadhoda, imithi, izicathulo, izimpahla zezimali, izimpahla zezimali, nezimpahla zezimali. Kunesekeli yebhadhoda, lezi pholishi zihlakanipha ekupakisheni iziqhamo, ikofi, icayisi, izithungulu, izihlahla, nezidlo ezikhulunywa ngokushesha. Amakhampani ebhadhoda ayisebenzisa ipholishi enembumba yezinyathelo eziphathu ekupakisheni izithungulu, izihlaza, izimpahla, nezixhumanisi ezidinga izimo ezihlanzekileyo. Umsebenzi wokuzithwalala uyasebenzisa lezi pholishi ekupakisheni izinqubo, izimpahla yezihlandlo, nezinkinga ezithile. Abafana bempahla abasebenzisa izici zokugcina ezingacindezeli igunya nemvelaphi. Ubunzima bepholishi enembumba yezinyathelo eziphathu bukubenza kube yisizo esihle kunezimali nezimali, ukubekela amabhrendi indlela efanele yokubonisa izimpahla ngemuva kokugcina kahle nokunikezela isikhathi eside sokusebenza.