译：JB/T 4107.5-1999 Electro-contact material chemical analysis method Determination of nickel content in silver-nickel (EDTA capacity method)

译：JB/T 9665-1999 Low-voltage assembly switchgear and control equipment accessory model scheme of coding

译：JB/T 4107.4-1999 Electro-contact material chemical analysis method Determination of silver content in silver-tungsten (iodimetric method)

译：JB/T 4107.1-1999 Electro-contact material chemical analysis methods: General principles and general provisions

译：JB/T 9548.3-1999 Iron-chromium aluminide alloy chemical analysis method: Determination of manganese using nitroprusside photometry

译：JB/T 9548.2-1999

译：JB/T 3752.1-1999

译：JB/T 4107.2-1999 Electro-contact material chemical analysis method - Determination of copper content in copper-tungsten (iodometric method)

译：JB/T 4107.7-1999 Electro-contact material chemical analysis method for determination of carbon content in silver graphite (carbon content determination by gas volume capacity method)

译：JB/T 4107.6-1999 Electro-contact material chemical analysis method - Determination of iron content in silver-iron (Determination of iron content using potassium dichromate method)