■ Hangarau Hangarau:
▢ Hangarite Hangarite
▢ Whakawai
▢ Tauhohenga Pawera iti (ki raro ki te -50 ℃）
▢ Tauhohenga Amination
▢ Tauhohenga Diazotization
▢ Tauhohenga Whakaora
▢ Matū Phosgene Matū
■ Hangarau koiora:
▢ Tauhohenga Enzymatic
▢ Tauhohenga Microbial
▢ Fermentation
▢ Hangarau ira
▢ Te Whakakore i te Enzyme