GB/T 21224-2007

GB/Z 21213-2007 High strength laminated sheet based on halongen-free flame-resistant resins and glass cloth GB/Z 21214-2007 Polyester film for flyback transformer GB/Z 21212-2007 Polyester film for membrane switches GB/Z 21215-2007 Rigid laminated sheet based on modified diphenyl ether resins and glass cloth GB/Z 28820.1-2012 Long-term radiation ageing in polymers - Part 1: Techniques for monitoring diffusion-limited oxidation GB/Z 28820.3-2012 Long-term radiation ageing in polymers - Part 3: Procedures for in-service monitoring of low-voltage cable materials GB/Z 28818-2012 Selection guide for polymeric materials for outdoor use under HV stress GB/Z 21223.3-2023 Guidelines for the statistical analysis of ageing test data—Part 3: Minimum specimen numbers at different test conditions with given experimental data