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HB 7607-1998 Poly-diphenyl Ether Insulated Impregnating Varnish (USD) via email in 1 business day VALID
GB/T 31838.4-2019 Solid insulating materials—Dielectric and resistive properties—Part 4:Resistive properties(DC methods)—Insulation resistance (USD) via email in 1-3 business day VALID
GB/T 29311-2012 Electrical insulating materials—A.C.voltage endurance evaluation—Introduction (USD) via email in 1-3 business day VALID
GB/T 26168.4-2018 Electrical insulating materials—Determination of the effects of ionizing radiation—Part 4:Procedures for assessment of ageing in service (USD) via email in 1-3 business day VALID
GB/T 1408.1-2016 Insulating materials—Test methods for electric strength—Part 1:Test at power frequencies (USD) via email in 1-3 business day VALID
GB/T 20629.3-2019 Non-cellulosic papers for electrical purposes—Part 3:Unfilled aramid(aromatic polyamide)papers (USD) via email in 1-3 business day VALID
AQ/T 2072-2019 Electrical testing specification of in-service electric insulation safety instruments for metal and nonmetal mines (USD) via email in 1 business day VALID
GB/T 31838.3-2019 Solid insulating materials—Dielectric and resistive properties—Part 3:Resistive properties(DC methods)—Surface resistance and surface resistivity (USD) via email in 1-3 business day VALID
GB/Z 28820.3-2012 Long-term radiation ageing in polymers - Part 3: Procedures for in-service monitoring of low-voltage cable materials (USD) via email in 1-3 business day VALID
JB/T 7082-1993 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 26168.2-2018 Electrical insulating materials—Determination of the effects of ionizing radiation—Part 2:Procedures for irradiation and test (USD) via email in 1-3 business day VALID
JG/T 3001-1992 (USD) via email in 1-3 business day ABOLISHED
GB/Z 21214-2007 Polyester film for flyback transformer via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 27749-2011 Test procedure for thermal endurance of insulating varnishes—Electric strength method (USD) via email in 1-3 business day VALID
NB/T 42005-2013 Test method for thermal voltage-endurance testing on groundwall insulation of stator coil of high voltage AC machines (USD) via email in 1-3 business day VALID
GB/T 15022.3-2011 Resin based reactive compounds used for electrical insulation—Part 3:Unfilled epoxy resinous compounds (USD) via email in 1-3 business day VALID
JB/T 8989.2-1999 (USD) via email in 1-3 business day
GB/T 29305-2012 Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials (USD) via email in 1-3 business day VALID
JB 3961-1985 (USD) via email in 1-3 business day ABOLISHED
MT 374-1994 (USD) via email in 1-3 business day ABOLISHED
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