2018CJ/T 264-2018 Rubber membrane microporous aerator for water treatment
2007CJ/T 264-2007 Membrane fine bubble diffuser for water and wastewater treatment
1996CJ/T 3015.4-1996 Openable middle and fine bubble diffuser for wastewater treatment
CJ/T 3015.4-1996 Openable middle and fine bubble diffuser for wastewater treatment was changed to CJ/T 264-2007 Membrane fine bubble diffuser for water and wastewater treatment.