2011SH/T 3004-2011 Design specification for heating,ventilation and air conditioning in petrochemical engineering
1999SH 3004-1999 Design code for heating, ventilation and air conditioning in petrochemical industry
SH 3004-1999 Design code for heating, ventilation and air conditioning in petrochemical industry was changed to SH/T 3004-2011 Design specification for heating,ventilation and air conditioning in petrochemical engineering.