2018CJ/T 263-2018 Corundum microporous aerator for water treatment
2007CJ/T 263-2007 Corundum fine bubble diffuser for water and wastewater treatment
1993CJ/T 3015.1-1993 Fine bubble aerator for wastewater treatment
CJ/T 3015.1-1993 Fine bubble aerator for wastewater treatment was changed to CJ/T 263-2007 Corundum fine bubble diffuser for water and wastewater treatment.