GB/T 40540-2021

GB/Z 41275.23-2023 Process management for avionics—Aerospace and defence electronic systems containing lead-free solder—Part 23: Rework and repair guidance to address the implications of lead-free electronics and mixed assemblies GB/Z 41275.22-2023 Process management for avionics—Aerospace and defence electronic systems containing lead-free solder—Part 22: Technical guidelines GB/Z 41275.4-2023 Process management for avionics—Aerospace and defence electronic systems containing lead-free solder—Part 4:Ball grid array（BGA）re-balling GB/T 28876.1-2012 Flammability of materials in space experimental facilities - Part 1: Requirements GB/T 30566-2014 GH4169 alloy bars,forgings and rings GB/T 28876.2-2014 Flammability of materials in space experimental facilities―Part 2: Test methods GB/T 34003-2017 Detection method of impurity elements in boron nitride GB/T 34520.7-2017 Test methods for continuous silicon carbide fiber—Part 7 ：High temperature strength retention rate