SJ/T 9569.2-1995 The quality classification standard for E-shaped magnetic cores made of magnetic oxide materials

SJ/T 9569.1-1995 The quality classification standard for UYF-shaped magnetic cores made of magnetic oxide materials SJ/T 9569.3-1995 The quality classification standards for deflection core used in color television receivers SJ/T 9569.4-1995 The Quality Classification Standard for R2K Tank-type Magnetic Core with High Stability SJ/T 9569.5-1995 The quality grading standards for fixed inductors in LGA and LGB types SJ/T 9569.6-1995 The standard for grading the quality of permanent magnet materials based on ferrite materials SJ/T 9569.7-1995 The standard for grading the mass of permanent magnetic iron oxide magnets used in speakers SJ/T 9569.8-1995 Quality Classification Standards for Rare Earth Cobalt Permanent Magnet Materials SJ/T 9569.9-1995 The quality grading standard for sintered neodymium iron boron permanent magnet materials