JG/T 14-1999 Air outlets and inlets for ventilation and air conditioning

JG/T 14-2010 Air outlets and inlets for ventilation and air conditioning

GB 8070 GB/T 321-1980 Preferred numbers and preferred number series GB/T 321-2005 Preferred numbers—Series of preferred numbers GB 5237.1-2004 Wrought aluminium alloy extruded profiles for architecture—Part 1:Untreated profiles GB/T 5237.1-2008 Aluminium alloy extruded profiles for architecture—Part 1:Mill finish profiles GB/T 5237.1-2017 Aluminium alloy extruded profiles for architecture—Part 1:Mill finish profiles GB 5237.2-2004 Wrought aluminium alloy extruded profiles for architecture—Part 2:Anodized colored profiles GB/T 5237.2-2008 Wrought aluminium alloy extruded profiles for architecture—Part 2:Anodized profiles GB/T 5237.2-2017 Wrought aluminium alloy extruded profiles for architecture— Part 2:Anodized profiles GB 5237.3-2004 Wrought aluminium alloy extruded profiles for architecture—Part 3:Electrophoretic coating profiles GB/T 5237.3-2008 Wrought aluminium alloy extruded profiles for architecture—Part 3:Electrophoretic coating profiles GB/T 5237.3-2017 Wrought aluminium alloy extruded profiles for architecture—Part 3:Electrodeposition coating profiles GB 5237.4-2004 Wrought aluminium alloy extruded profiles for architecture—Part 4:Powder coating profiles GB/T 5237.4-2008 Wrought aluminium alloy extruded profiles for architecture—Part 4:Powder coating profiles GB/T 5237.4-2017 Wrought aluminium alloy extruded profiles for architecture—Part 4:Powder coating profiles GB 5237.5-2004 Wrought aluminium alloy extruded profiles for architecture—Part 5:PVDF coating profiles GB/T 5237.5-2008 Wrought aluminium alloy extruded profiles for architecture—Part 5:PVDF coating profiles GB/T 5237.5-2017 Wrought aluminium alloy extruded profiles for architecture— Part 5:Paint coating profiles GB 5237.6-2004 Wrought aluminium alloy extruded profiles for architecture—Part 6:Thermal barrier profiles GB/T 5237.6-2012 Wrought aluminium alloy extruded profiles for architecture—Part 6:Thermal barrier profiles GB/T 5237.6-2017 Wrought aluminium alloy extruded profiles for architecture—Part 6:Thermal barrier profiles GB/T 11253-2007 Cold-rolled sheets and strips of carbon structural steels GB/T 11253-2019 Cold-rolled sheet and strip of carbon structural steels GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 11253-1989 Cold-rolled plain carbon andlow alloy structural steel sheets and strips