Ngokuthuthuka kwesayensi kanye nokuthuthukiswa komnotho, izinhlobo eziningi zamakhemikhali zisetshenziswa kakhulu. Isetshenziswa ekukhiqizeni nasekuphileni, kepha ingozi yemvelo yokuphepha, impilo kanye nezinkinga zemvelo iya ngokuya igqama. Izingozi eziningi zamakhemikhali eziyingozi nazo zibangelwa ukuntula ulwazi lokuphepha, azihambisani nezinqubo zokusebenza zokuphepha kanye nemithetho nemithetho yokuphepha. Ngakho-ke, ukuqeda ukuziphatha okungaphephile kokulawula abantu, kufanele siqale ekuqiniseni ukuqeqeshwa kokukhiqiza ukuphepha kanye nemfundo.

Ngokuqondene nomsebenzi, ikakhulukazi singomunye wabakhiqizi besifutho seqhwa, intambo eyisithutha, isifutho sezinwele, isifutho sombala wezinwele nokunye. Futhi zingumkhiqizo we-aerosol. Kumelwe sisebenzise ulwazi lwezokuphepha.

Kunabantu abangu-50 abathamela umhlangano wokuqeqeshwa kolwazi lwezokuphepha othisha wabo ovela eMnyangweni Wezimo Eziphuthumayo wase-Wengyuan. Lezi zihloko zomhlangano wokuqeqeshwa zazikhuluma kakhulu ngamathiphu okuphunyuka, izimo eziyingozi kanye nokubaluleka kokufunda ulwazi lokuphepha.

Mayelana nabasebenzi enkampanini yamakhemikhali, ulwazi lokuphepha kokukhiqiza alwanele, futhi imibono yabasebenzi idinga ukuthuthukiswa. Ngoba inqubo yokukhiqiza kungokwalabo engozini enkulu, ingcindezi ephezulu, evutha umlilo, imboni yeziqhumane, iyunithi yebhizinisi noma umuntu kubungozi bayo nokuvikeleka okufihliwe okufihliwe kanye nokulahlwa kwezimo eziphuthumayo kolwazi akuqondi kakhulu. Ngakho-ke, inkampani akufanele inikeze kuphela ukuqeqeshwa kwezokuphepha kodwa futhi abasebenzi kufanele bafunde ulwazi ngokwabo.

Ukwenza "ukuphepha kuqala, ukuvimbela kuqala", ukuqeqeshwa kwezokuphepha kubalulekile kuwo wonke umuntu. Ulwazi lokuphepha, imfundo yokuphepha yezimiso zokuziphatha, imithetho yokuphepha, ngokusebenzisa izinhlobo ezahlukene zemfundo nokuqeqeshwa, kwenza abasebenzi babe nokuvikeleka kwekhwalithi yesimanje, bazuze izindinganiso eziphakeme zokuvikeleka, ukulondeka kokuqaphela okuhle kokuziphatha, bangene emkhubeni wokuqaphela isimiso sokuziphatha sokuphepha, ukuze bonke abasebenzi baphelele ngokwengeziwe, badlale ngokugcwele umgomo womuntu kanye nekhono lokusungula, futhi bafinyelele umgomo ophakeme wokukhiqiza.