Inproduction, te fatory utu sepcial aro ki te prodtaction taiao me te whakamahi o te pūngao hou.Tangohia te "whenua matomato" hei arahi whakaputa.
Ko nga hua matua ko Lead Nitrate, Zinc Sulphate, Sodium Metabisulphite, me te Sodium Persulphate.
To tatou Tari
