Ukukhiqizwa, i-fatory inaka ukunaka kwe-sepcial ekukhiqizeni kwemvelo kanye nokusetshenziswa kwamandla amasha.Thatha "umhlaba oluhlaza" njengesiqondiso sokukhiqiza.
Imikhiqizo eyinhloko i-lead Nitrate, i-Zinc Sulphate, i-Sodium Metabisulphite, ne-Sodium Persulphate.
Ihhovisi Lethu
