GB/T 4728.2 Graphical symbols for electrical diagrams—Part 2:Symbol elements,qualifying symbols and other symbols having general application*, 2018-07-13 Update
GB/T 4728.3 Graphical symbols for electrical diagrams.Part 3:Conductors and connecting devices*, 2018-07-13 Update
GB/T 4728.5 Graphical symbols for electrical diagrams—Part 5:Semiconductors and electron tubes*, 2018-07-13 Update
GB/T 4728.6 Graphical symbols for electrical diagrams—Part 6: Production and conversion of electrical energy*, 2022-10-14 Update
GB/T 4728.7 Graphical symbols for electrical diagrams—Part 7:Switchgear, controlgear and protective devices*, 2022-10-14 Update
GB/T 4728.8 Graphical symbols for electrical diagrams—Part 8:Measuring instruments, lamps and signalling devices*, 2022-10-14 Update
GB/T 4728.9 Graphical symbols for electrical diagrams—Part 9: Telecommunications :Switching and peripheral equipment*, 2022-10-14 Update
GB/T 5465.1 Graphical symbols for use on electrical equipment-Part1:Overview and classification*, 2009-03-13 Update
QJ 3200-2004 history
2004QJ 3200-2004 Standardization examination rules for design documents of space products
QJ 3200-2004 Standardization examination rules for design documents of space products has been changed from QJ/G 22-1985 Design Document Standardization Review Regulations.